Los Angeles County market guide
Santa Clarita direct mail, where owners lead in every ZIP code
In Santa Clarita, a homeowner offer can often go to every door: 72% of households in the city's seven ZIP codes own their home, against 46% across Los Angeles County, and no ZIP code falls below 61%. Those ZIP codes hold 135 carrier routes with 84,308 residential deliveries, and every piece, whether an addressed postcard or an EDDM flat, sorts to SCF SANTA CLARITA CA 913. Plavidian, whose print and mail plant is in Vista, California, 127 miles away by road, chooses the routes or builds the list with you, addresses the mail and plans its USPS entry.
Santa Clarita at a glance
- 78,232 households in 7 ZIP codes
- 232,883 residents, third-largest city in Los Angeles County (DOF)
- 72% of households own, rising to 87% in 91390
- 41 of 135 carrier routes are USPS rural routes
- Letters and flats both sort to SCF SANTA CLARITA CA 913
Households by ZIP code
Where Santa Clarita households are
Owners hold the majority in every row, from 61% of households in 91321 to 87% in 91390, so the columns that tell one Santa Clarita ZIP code from another are the rest. Households with children run from 24% in 91355 to 45% in 91387 and householders 65 or older from 17% in 91354 to 29% in 91321 and 91355; median household income spans $93,281 in 91321 to $148,818 in 91354, and median home value $589,400 in 91351 to $843,200 in 91390.
| ZIP | Households | Owner-occupied | With children | Householder 65+ | Median household income | Median home value |
|---|---|---|---|---|---|---|
| 91321 | 10,764 | 61% | 36% | 29% | $93,281 | $654,300 |
| 91350 | 13,734 | 82% | 41% | 21% | $135,612 | $733,000 |
| 91351 | 10,420 | 74% | 38% | 21% | $112,888 | $589,400 |
| 91354 | 10,967 | 78% | 42% | 17% | $148,818 | $803,000 |
| 91355 | 11,788 | 65% | 24% | 29% | $109,348 | $744,300 |
| 91387 | 14,233 | 65% | 45% | 19% | $114,378 | $695,000 |
| 91390 | 6,326 | 87% | 31% | 27% | $143,963 | $843,200 |
| Total | 78,232 | |||||
Countywide, Los Angeles County's ZIP code areas put owners at 46% of households, children in 31%, a householder 65 or older in 23% and incomes of $150,000 or more in 27%. Santa Clarita's seven run above each of those except the older-householder share, which matches at 23%: 72% owners, 37% with children and 38% at $150,000 or more, while 19% of households earn under $50,000. Because ZIP Code Tabulation Areas spill across the city limit, the 78,232 households in these seven ZIP code areas are not a count of the city alone; choosing the city itself in the Mailing List Builder, which counts inside the city boundary, returns a different total.
Source: U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates, by ZIP Code Tabulation Area (ZCTA). ZCTAs approximate USPS ZIP Code areas and cross city lines; figures are survey estimates.
Carrier routes
135 carrier routes, 41 of them rural
USPS returned carrier routes for all seven ZIP codes, 135 in total, with each ZIP code's rural routes shown in parentheses; there are no P.O. Box sections. Select routes by ZIP code rather than by the city name USPS gives them: only the 22 routes in 91350 carry Santa Clarita as their USPS city, while the others read Newhall (91321), Valencia (91354 and 91355) or Canyon Country (91351, 91387 and 91390).
| ZIP | Carrier routes | Residential deliveries | Business deliveries | Delivered from |
|---|---|---|---|---|
| 91321 | 19 (1 rural) | 11,508 | 1,023 | Newhall |
| 91350 | 22 (8 rural) | 14,701 | 907 | Santa Clarita |
| 91351 | 17 (1 rural) | 10,852 | 944 | Santa Clarita |
| 91354 | 17 (9 rural) | 12,001 | 73 | Santa Clarita |
| 91355 | 24 (6 rural) | 12,992 | 3,009 | Santa Clarita |
| 91387 | 24 (8 rural) | 15,684 | 286 | Newhall |
| 91390 | 12 (8 rural) | 6,570 | 130 | Santa Clarita |
| Total | 135 | 84,308 | 6,372 |
Source: USPS EDDM route service: carrier routes with residential and business delivery counts, retrieved September 27, 2026. Counts change as USPS updates routes; the EDDM Route Builder shows the current figures.
Owners and renters
Every ZIP code has an owner majority, some far larger than others
No Santa Clarita ZIP code leans to renters. Owner-occupied homes make up 87% of households in 91390, 82% in 91350, 78% in 91354 and 74% in 91351, so an EDDM drop there, which reaches every residential door on the chosen routes, lands mostly on households that can approve a new roof or a remodel.
The margin is thinner in 91321 (61% owners) and in 91355 and 91387 (65% each). In those three, an offer only an owner can accept should go to an addressed list filtered to owner-occupied homes, which the Mailing List Builder counts from Census data before you order. Home value is a poor proxy for ownership: 91351 has the lowest median home value of the seven, $589,400, yet a larger owner share than 91355, where the median is $744,300.
That leaves four ZIP codes where roofing, remodeling and landscaping offers can go to every door: 91390, 91350, 91354 and 91351. A real estate agent farming for listings finds the highest median home values in 91390 ($843,200) and 91354 ($803,000), two ZIP codes where at least 78% of households own.
Children and older householders
Families in 91387, 91354 and 91350; older householders in 91321 and 91355
Children live in 45% of households in 91387, 42% in 91354 and 41% in 91350, against 31% across Los Angeles County. 91387 is also the city's largest every-door universe: its 24 routes carry 15,684 residential deliveries, more than any other Santa Clarita ZIP code. Mail that any parent can act on, from a dental office welcoming new pediatric patients to a youth soccer club opening registration, fits EDDM in those three, where it reaches renting families as well as owners.
91355 runs the other way: children live in only 24% of its households, the lowest share of the seven, and 29% have a householder 65 or older, a share 91321 matches and 91390 nearly does, at 27%. A back-to-school flyer sent to every door in 91355 would mostly miss, while an invitation to tour a senior living community or an insurance agent's Medicare plan review fits it better.
Even in 91355 and 91321, 71% of householders are younger than 65, so an age-based offer does better on an addressed list selected by householder age than on whole routes. 91354 sits at the opposite end: the lowest share of older householders (17%), the highest median household income ($148,818) and 78% owners, so one piece there can speak to owners and to parents at once.
Density and route size
91354 packs its homes close; 91390 spreads them thin
Across 283.2 square miles of land, the seven ZIP code areas average 276 households per square mile, but the spread is wide: 1,496 in 91354 and 1,199 in 91351, against 404 in 91321, 266 in 91387 and 40 in 91390. The household table leaves density out, and it changes how a local business should draw its mailing area.
A radius drawn around a storefront in the Mailing List Builder gathers far more households in 91354 or 91351 than the same circle in 91390 or 91387. 91387 holds 14,233 households, the most of any Santa Clarita ZIP code, but spreads them over far more ground than 91354 does. In 91390 and 91387, whole ZIP codes or carrier routes usually reach a workable count sooner than a tight radius does.
Rural routes turn up at both ends of that range. Nine of the 17 routes in 91354, the most tightly settled ZIP code, are rural, and together its routes carry 12,001 residential deliveries, the most per route of any Santa Clarita ZIP code; 8 of the 12 routes in 91390, the most thinly settled, are rural too. Route type is no guide to density here, so pick EDDM routes by the delivery counts the EDDM Route Builder lists for each one.
Business deliveries
Business deliveries cluster in 91355
Santa Clarita's routes carry 6,372 business deliveries, and 3,009 of them are in 91355. The next largest counts are 1,023 in 91321, 944 in 91351 and 907 in 91350, and three ZIP codes have hardly any: 286 in 91387, 130 in 91390 and 73 in 91354.
For an offer aimed at workplaces, such as a restaurant's catering menu or an office cleaning service, include the business deliveries in 91355 and weigh them in 91321, 91351 and 91350. A household offer can leave them off in every ZIP code, and in 91387, 91390 and 91354 the choice barely changes the quantity either way.
Even in 91355, residential deliveries outnumber business ones by more than four to one (12,992 to 3,009), so a workplace offer sent to every door there still lands mostly at homes. To reach one kind of business rather than every workplace on a route, Plavidian supplies business lists through licensed data providers; see mailing lists.
Delivery units and distance
Two delivery units, and 127 road miles to the Vista plant
The Delivered from column in the route table names only two delivery units for all 135 routes. One serves the 19 routes of 91321 and the 24 of 91387; the other serves 91350, 91351, 91354, 91355 and 91390. The three ZIP codes whose routes carry the USPS city name Canyon Country are split between them: 91387 goes with 91321, while 91351 and 91390 go with the larger group.
That matters when EDDM goes in at delivery unit entry, where pieces are taken to the unit that delivers each route: a citywide drop goes to both units, while a drop kept to 91350 and 91354, two of the family ZIP codes, goes to one. The EDDM Route Builder prices each Santa Clarita selection at origin, SCF and delivery unit entry side by side before you order.
The plant on East Vista Way is 127 miles from Santa Clarita by road, farther than Long Beach (78 miles) or West Los Angeles (102). For print that is not mailed, that distance decides delivery: door hangers, yard signs and other unmailed pieces ship to a Santa Clarita address or wait for will-call pickup in Vista, since Plavidian's local delivery runs around North County San Diego.
Mail needs no courier from you. It is addressed and made ready for USPS in Vista; smaller mailings enter at the origin business mail entry unit Plavidian uses, and larger ones can ride a drop shipment to the sectional center labeled SCF SANTA CLARITA CA 913 or, for EDDM, to the two delivery units. From entry on, USPS sets the delivery timing, and the Mail Date Planner turns your mail class and entry into an estimated in-home window. Orders close at 12:00 PM Pacific for every turnaround except the 2-day rush some products offer, which closes at 9:00 AM Pacific, and production starts once you approve the proof (Turnaround Times).
Local direct mail planning
Six steps to a Santa Clarita mailing
The steps below draw on the Santa Clarita figures above, and most open a tool already set to the ZIP codes or the piece they describe.
Define the market
Settle who the offer is for, then read off the ZIP codes that hold them: owners in 91390, 91350 and 91354; households with children in 91387, 91354 and 91350; householders 65 or older in 91321 and 91355; businesses in 91355. The Mailing List Builder counts the household groups from Census figures bundled into Plavidian's system, by ZIP code, radius or a shape you draw, and the list is compiled once you order; the EDDM Route Builder counts business deliveries route by route.
Count Families in 91387, 91354 and 91350Compare approaches
For an offer only an owner can use, EDDM already lands mostly on owners in 91390, 91350, 91354 and 91351, where 74% to 87% of households own, while an addressed owner list fits 91321, 91355 and 91387 better. Offers any household can use suit EDDM in all seven. The comparison tool asks who you need to reach, whether each piece needs a name and which household traits matter, then recommends EDDM, an addressed list or a test of both.
Compare EDDM and a Mailing ListEstimate the mailing
Price an every-door drop from USPS route data: the 24 routes of 91387, homes only, take 15,684 flats by the count of September 27, 2026. A list mailing is sized by the Mailing List Builder count once the owner, age or children filter is applied.
Price an EDDM Drop to 91387Prepare the creative
Plavidian runs EDDM with flats only, in the 6.5x9, 8.5x11 and 9x12 sizes the EDDM Route Builder offers. A 4x6, 6x9 or 6x11 postcard, a letter or one of Plavidian's folded self-mailers is letter-size (no larger than 6-1/8 by 11-1/2 inches) and mails to an addressed list. Whichever you pick, it sorts to SCF SANTA CLARITA CA 913, so choose it for the audience and the postage. Plavidian Studio™, the free online designer, lays out the bleed and safe zone, keeps the USPS address and permit area clear, and saves the press-ready PDF with your order.
Design a Santa Clarita EDDM FlyerProduce and mail
The Vista plant handles the data work, addressing and USPS preparation for a Santa Clarita mailing, whether it enters at origin or rides a drop shipment to SCF SANTA CLARITA CA 913; any part an approved vendor produces is held to the Plavidian Standard™ too. Plavidian mails on its own permits, so you need no permit. A card can cover the printing, but postage is paid by check or wire transfer, and no mail is released to USPS until it has cleared.
Follow the mail
Every Plavidian mailing comes with Plavidian Insight™ at no separate charge; it reports the USPS scans your addressed mail collects on its way to Santa Clarita, a view of the mailstream rather than proof of delivery. EDDM flats carry no barcode, so for an EDDM drop the Plavidian Assurance™ Report is the proof it was delivered to USPS. Addressed letter-size mail, such as a personalized letter to householders 65 or older in 91355, can add Plavidian Sentry™, optional camera verification that matches each piece to its record before it leaves Vista; EDDM flats cannot carry it.
See What Insight Shows
Start here
Plan your Santa Clarita mailing
Each link opens a free tool for planning a mailing to Santa Clarita.
USPS entry
Sorted under the city's own name
Every Santa Clarita ZIP code begins with 913, so the table has one row, and letters, flats and ADC sortation on it all carry the city's name: SCF SANTA CLARITA CA 913 and ADC SANTA CLARITA CA 913. A 6x11 postcard to an owner list in 91321 and an 8.5x11 EDDM flat in 91387 therefore head for the same sectional center; changing the piece changes the postage and whether Plavidian can send it as EDDM, not the destination. The label covers far more than the city: ZIP codes starting 910 through 916, including Pasadena, Glendale, Burbank, the San Fernando Valley and the Thousand Oaks area of Ventura County, sort to it as well, while Lancaster and Palmdale (935) sort to SCF BAKERSFIELD CA 932 and Simi Valley, Moorpark and Oxnard (930) to SCF SANTA BARBARA CA 931.
| ZIP codes starting | Letters sort to | Flats sort to | ADC |
|---|---|---|---|
| 913 | SCF SANTA CLARITA CA 913 | SCF SANTA CLARITA CA 913 | ADC SANTA CLARITA CA 913 |
Source: USPS labeling lists L005 (letters), L016 (flats) and L004 (ADC), effective June 27, 2026.
By industry
Industry guides that apply in Santa Clarita
Questions
Questions about direct mail in Santa Clarita
How many homes does a mailing to all of Santa Clarita reach?
84,308 homes: the residential deliveries USPS listed on September 27, 2026 for the 135 carrier routes of ZIP codes 91321, 91350, 91351, 91354, 91355, 91387 and 91390, and the quantity a homes-only EDDM mailing is printed to. Census survey estimates for 2019 to 2023 put 78,232 households in those ZIP codes.
The USPS figure is higher in each of the seven ZIP codes, for example 15,684 deliveries against 14,233 households in 91387, so size an every-door run from the route data and a list mailing from the Mailing List Builder. The California Department of Finance estimated 232,883 residents in the city on January 1, 2026 (provisional), making it the county's third-largest city after Los Angeles and Long Beach.
Can EDDM reach all seven Santa Clarita ZIP codes?
Yes. USPS returned routes for all seven ZIP codes, 135 in all, none of them P.O. Box sections: 84,308 homes, plus 6,372 business deliveries if you include them.
Because Plavidian mails EDDM on its own permit through the business mail entry unit, the USPS Retail cap of 5,000 pieces per ZIP Code each day is not a factor, and it would otherwise bite in all seven, since even 91390 has 6,570 residential deliveries. Plavidian's minimum is 200 pieces, each one a 6.5x9, 8.5x11 or 9x12 flat, and no EDDM selection can filter by ownership, age, income or name.
Where in Santa Clarita can a homeowner offer go to every door?
In 91390, where 87% of households own, and in 91350 (82%), 91354 (78%) and 91351 (74%). In 91321 (61%) and in 91355 and 91387 (65% each), mail an owner-only offer to a list filtered to owner-occupied homes.
EDDM delivers to every residential address on a route and cannot tell owners from renters, and 39% of households in 91321 rent. The Mailing List Builder counts owner households in 91321, 91355 and 91387 from bundled Census data, and the list is compiled, CASS-processed and deduplicated once you order.
Which USPS sectional center sorts Santa Clarita mail?
The one labeled SCF SANTA CLARITA CA 913. All seven Santa Clarita ZIP codes start with 913; USPS labeling lists L005 and L016, effective June 27, 2026, assign that prefix to this SCF for letters and flats alike, and L004 gives it ADC SANTA CLARITA CA 913.
So a campaign pairing an EDDM flat in 91387 with an addressed letter to older householders in 91355 plans one SCF destination. A trade area that runs into the Antelope Valley changes that, because Lancaster and Palmdale's 935 ZIP codes sort to SCF BAKERSFIELD CA 932; the Los Angeles County guide sets out the county's other labels.
Should a Santa Clarita EDDM drop include business addresses?
Only when workplaces are part of the audience, and mainly in 91355, which holds 3,009 of the 6,372 business deliveries on Santa Clarita routes. In 91354 (73), 91390 (130) and 91387 (286), including them barely changes the count.
In 91355 the business side adds 3,009 pieces to 12,992 homes, and the EDDM Route Builder prices the drop with and without them before you order. EDDM cannot choose a type of business; to reach only medical offices or property managers, for example, use a business list Plavidian supplies through licensed data providers.
Can a mail house in Vista, 127 miles away, run a Santa Clarita mailing?
Yes. Plavidian addresses and prepares the pieces at its Vista plant, then enters them at its origin business mail entry unit or, when the volume justifies the freight, drop-ships them to the sectional center labeled SCF SANTA CLARITA CA 913 (for EDDM, to the delivery units serving the chosen routes). Print that is not mailed, like door hangers and yard signs, is shipped to you or held for pickup in Vista.
Postage is charged to Plavidian's own permits and paid by check or wire, never by card (printing can go on a card), and nothing mails until the postage funds have cleared. From entry on, USPS sets the pace: plan the in-home window with the Mail Date Planner and watch the USPS scans in Plavidian Insight, which every Plavidian mailing includes.
Printing and mailing by region
Sources
- California Department of Finance, Report E-1: population of California cities and counties, January 1, 2026 (provisional)
- California Department of Finance, news release on the E-1 estimates, May 1, 2026
- U.S. Census Bureau, American Community Survey, 2019 to 2023 5-year ZIP Code Tabulation Area estimates
- U.S. Census Bureau, ZIP Code Tabulation Area (ZCTA) guidance
- USPS FAST labeling list L005 (SCF sortation, letters), effective June 27, 2026
- USPS FAST labeling list L016 (SCF sortation, flats), effective June 27, 2026
- USPS FAST labeling list L004 (ADC sortation), effective June 27, 2026
- USPS EDDM route service: route counts, route types, delivery units and USPS city names for the seven ZIP codes, retrieved September 27, 2026
- USPS Every Door Direct Mail overview, including the Retail per-ZIP daily limit
- USPS Domestic Mail Manual section 201, letter and flat size standards
- Open Source Routing Machine (OSRM) on OpenStreetMap data: road distance from 2210 E Vista Way
Plan a Santa Clarita mailing with us
Send the offer, the Santa Clarita ZIP codes or routes you are weighing and the piece. We will show where every-door EDDM fits and where an owner, family or age list does better, plan the entry to SCF SANTA CLARITA CA 913, and price the printing, the list work and the postage in one quote.