78237 ZIP Code, San Antonio, TX
78237 is a ZIP code in San Antonio, Texas in Bexar County. It covers 7.1 square miles of land, centered about 4.4 miles west of downtown San Antonio. The closest ZIP codes are 78207, 78226 and 78228. 37,379 people live here in 11,821 households. At about 5,246 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (61% own). Median household income is $42,772, well below the Texas median of $78,476.
Quick facts
- Mailing city: San Antonio, TX
- County: Bexar County
- Metro area: San Antonio
- Land area: 7.1 sq mi
- Population: 37,379
- Median household income: $42,772
- Carrier routes: 13 (12,660 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 37,379 |
| Households | 11,821 |
| Median household income | $42,772 |
| Income per person | $20,555 |
| Median age | 34.7 |
| Homeowners | 61.3% |
| Median home value | $115,500 |
| Median rent | $1,064 |
| Bachelor's degree or higher | 6.2% |
| Average commute (minutes) | 25.4 |
| Households with kids under 18 | 38.7% |
| Moved in the past year | 11.1% |
| Below the poverty line | 27.6% |
| Broadband internet | 85.9% |
| Speak a non-English language at home | 67.2% |
Household income
| % of households | Value |
|---|---|
| <$10K | 10.1% |
| $10–15K | 6.1% |
| $15–25K | 11.4% |
| $25–35K | 12.6% |
| $35–50K | 16.9% |
| $50–75K | 17.8% |
| $75–100K | 10.4% |
| $100–150K | 9.2% |
| $150–200K | 3.1% |
| $200K+ | 2.4% |
Age
| % of all residents | Value |
|---|---|
| <10 | 14.8% |
| 10–19 | 14.7% |
| 20–24 | 7.0% |
| 25–34 | 13.9% |
| 35–44 | 12.8% |
| 45–54 | 11.0% |
| 55–64 | 13.5% |
| 65–74 | 6.4% |
| 75+ | 5.9% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 20.1% |
| Owned outright | 35.8% |
| Rented | 34.2% |
| Vacant | 9.9% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 78.5% |
| Townhome | 1.4% |
| 2–4 units | 6.8% |
| 5–19 units | 5.3% |
| 20+ units | 7.5% |
| Mobile / other | 0.5% |
Businesses in 78237
350 business establishments with 5,378 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 71
- Accommodation and Food Services: 63
- Health Care and Social Assistance: 41
- Other Services (except Public Administration): 38
- Construction: 35
- Finance and Insurance: 29
- Professional, Scientific, and Technical Services: 13
- Administrative and Support and Waste Management and Remediation Services: 11
EDDM carrier routes
78237 has 13 USPS carrier routes with 12,660 residential and 782 business mailboxes. Open the EDDM route map.
Carrier routes in 78237
78237 has 13 USPS carrier routes (13 city (C)) with 12,660 residential and 782 business mailboxes. Routes range from 591 homes (C061) to 1,615 homes (C069); the median route has 981 homes. The Census counted 11,821 households in 78237 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 2 |
| 750–999 | 6 |
| 1,000–1,499 | 4 |
| 1,500+ | 1 |
Best routes in 78237 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route C071 — Est. median household income $54,189, 849 homes
- Route C072 — Est. median household income $51,576, 817 homes
- Route C066 — Est. median household income $48,742, 935 homes
- Route C061 — Est. median household income $45,032, 591 homes
- Route C060 — Est. median household income $44,489, 728 homes
Select these 5 routes on the route map
Often mailed by: Home services EDDM, Real estate EDDM postcards, Landscaping and lawn care mailers
Most families with kids
For tutoring, youth sports, pediatric dental, child care and family dining.
- Route C060 — Est. families with children under 18 46.4%, 728 homes
- Route C063 — Est. families with children under 18 42.7%, 1,038 homes
- Route C068 — Est. families with children under 18 41.3%, 1,075 homes
- Route C064 — Est. families with children under 18 41.0%, 1,179 homes
- Route C067 — Est. families with children under 18 39.7%, 985 homes
Select these 5 routes on the route map
Often mailed by: Dental practice EDDM, Healthcare and clinic mailers
Most homeowners
Owners decide on roofs, HVAC, lawns, solar and insurance; renters usually can't.
- Route C072 — Est. owner-occupied homes 73.6%, 817 homes
- Route C060 — Est. owner-occupied homes 68.8%, 728 homes
- Route C063 — Est. owner-occupied homes 68.2%, 1,038 homes
- Route C062 — Est. owner-occupied homes 65.1%, 1,070 homes
- Route C061 — Est. owner-occupied homes 64.9%, 591 homes
Select these 5 routes on the route map
Often mailed by: Roofing direct mail, HVAC postcards
Most new movers
New residents are still choosing a dentist, a gym and a lawn service.
- Route C068 — Est. residents who moved in the past year 23.6%, 1,075 homes
- Route C060 — Est. residents who moved in the past year 15.0%, 728 homes
- Route C067 — Est. residents who moved in the past year 12.6%, 985 homes
- Route C064 — Est. residents who moved in the past year 12.5%, 1,179 homes
- Route C069 — Est. residents who moved in the past year 12.4%, 1,615 homes
Select these 5 routes on the route map
Often mailed by: Restaurant EDDM menus and offers, Gym and fitness mailers
Newest homes
Newer subdivisions: landscaping, window treatments, fencing, security, home warranties.
- Route C070 — Est. homes built 2010 or later 8.4%, 981 homes
- Route C062 — Est. homes built 2010 or later 8.2%, 1,070 homes
- Route C069 — Est. homes built 2010 or later 7.8%, 1,615 homes
- Route C071 — Est. homes built 2010 or later 4.7%, 849 homes
- Route C063 — Est. homes built 2010 or later 3.7%, 1,038 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C068 — USPS business mailboxes 126, 1,075 homes
- Route C062 — USPS business mailboxes 94, 1,070 homes
- Route C060 — USPS business mailboxes 88, 728 homes
- Route C066 — USPS business mailboxes 87, 935 homes
- Route C069 — USPS business mailboxes 78, 1,615 homes
Select these 5 routes on the route map
Every carrier route in 78237
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C060 | City | 728 | 88 | $44,489 | 68.8% | 46.4% | 15.0% |
| C061 | City | 591 | 78 | $45,032 | 64.9% | 35.9% | 11.5% |
| C062 | City | 1,070 | 94 | $43,742 | 65.1% | 39.4% | 10.6% |
| C063 | City | 1,038 | 11 | $33,639 | 68.2% | 42.7% | 4.5% |
| C064 | City | 1,179 | 18 | $37,211 | 63.0% | 41.0% | 12.5% |
| C066 | City | 935 | 87 | $48,742 | 64.5% | 38.1% | 9.7% |
| C067 | City | 985 | 44 | $36,120 | 58.5% | 39.7% | 12.6% |
| C068 | City | 1,075 | 126 | $36,197 | 53.0% | 41.3% | 23.6% |
| C069 | City | 1,615 | 78 | $42,640 | 58.4% | 39.4% | 12.4% |
| C070 | City | 981 | 45 | $41,183 | 56.1% | 32.8% | 8.1% |
| C071 | City | 849 | 64 | $54,189 | 59.0% | 33.0% | 11.4% |
| C072 | City | 817 | 42 | $51,576 | 73.6% | 37.6% | 12.1% |
| C075 | City | 797 | 7 | $44,011 | 61.1% | 31.4% | 9.0% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78237 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 78207 — San Antonio city, TX (2.4 mi)
- 78226 — San Antonio city, TX (2.6 mi)
- 78228 — San Antonio city, TX (2.8 mi)
- 78225 — San Antonio city, TX (3.3 mi)
- 78243 — San Antonio city, TX (3.8 mi)
- 78204 — San Antonio city, TX (3.9 mi)
- 78201 — San Antonio city, TX (4 mi)
- 78236 — Lackland AFB CDP, TX (4.2 mi)
Areas that include 78237
- San Antonio, TX ZIP codes — 64 ZIP codes
- Bexar County ZIP codes — 76 ZIP codes
- San Antonio ZIP code map — 121 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 24 of 104: highest share of households with children in the San Antonio area
- No. 19 of 74: highest share of households with children in Bexar County
- No. 15 of 63: highest share of households with children in San Antonio, TX
Mail every home in 78237
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
San Antonio EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 78237, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78237 in?
- 78237 is a San Antonio, TX mailing address. By land area, 100% lies inside San Antonio.
- What county is 78237 in?
- 78237 is in Bexar County.
- What is the population of 78237?
- About 37,379 people (±2,483), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,019.
- What is the median household income in 78237?
- $42,772 (±$2,615), compared with $78,476 for Texas as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 78237?
- 13 USPS carrier routes with 12,660 residential and 782 business mailboxes (13,442 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78237?
- The closest, measured center to center: 78207 (2.4 mi, San Antonio), 78226 (2.6 mi, San Antonio), 78228 (2.8 mi, San Antonio), 78225 (3.3 mi, San Antonio), 78243 (3.8 mi, San Antonio) and 78204 (3.9 mi, San Antonio).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.