78218 ZIP Code, San Antonio, TX
78218 is a ZIP code in San Antonio, Texas in Bexar County. It covers 11 square miles of land, centered about 7.6 miles northeast of downtown San Antonio. The closest ZIP codes are 78239, 78244 and 78217. 39,428 people live here in 15,193 households. At about 3,528 people per square mile it has suburban density, and owners and renters are mixed (48% own). Median household income is $57,285, below the Texas median of $78,476.
Quick facts
- Mailing city: San Antonio, TX
- County: Bexar County
- Metro area: San Antonio
- Land area: 11 sq mi
- Population: 39,428
- Median household income: $57,285
- Carrier routes: 18 (16,338 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 39,428 |
| Households | 15,193 |
| Median household income | $57,285 |
| Income per person | $30,624 |
| Median age | 36 |
| Homeowners | 48.2% |
| Median home value | $190,900 |
| Median rent | $1,215 |
| Bachelor's degree or higher | 20.7% |
| Average commute (minutes) | 22.8 |
| Households with kids under 18 | 28.5% |
| Moved in the past year | 14.3% |
| Below the poverty line | 18.9% |
| Broadband internet | 90.6% |
| Speak a non-English language at home | 39.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 9.1% |
| $10–15K | 5.3% |
| $15–25K | 6.4% |
| $25–35K | 11.7% |
| $35–50K | 8.9% |
| $50–75K | 22.9% |
| $75–100K | 11.2% |
| $100–150K | 12.3% |
| $150–200K | 7.3% |
| $200K+ | 4.9% |
Age
| % of all residents | Value |
|---|---|
| <10 | 13.0% |
| 10–19 | 12.6% |
| 20–24 | 6.1% |
| 25–34 | 17.2% |
| 35–44 | 13.2% |
| 45–54 | 12.4% |
| 55–64 | 11.4% |
| 65–74 | 9.0% |
| 75+ | 5.1% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 27.4% |
| Owned outright | 18.2% |
| Rented | 48.6% |
| Vacant | 5.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 53.8% |
| Townhome | 2.0% |
| 2–4 units | 12.2% |
| 5–19 units | 18.1% |
| 20+ units | 8.4% |
| Mobile / other | 5.5% |
Businesses in 78218
907 business establishments with 27,125 employees (ZIP Codes Business Patterns 2023).
- Accommodation and Food Services: 141
- Retail Trade: 129
- Wholesale Trade: 117
- Transportation and Warehousing: 84
- Other Services (except Public Administration): 69
- Health Care and Social Assistance: 66
- Real Estate and Rental and Leasing: 53
- Construction: 52
EDDM carrier routes
78218 has 18 USPS carrier routes with 16,338 residential and 1,342 business mailboxes. Open the EDDM route map.
Carrier routes in 78218
78218 has 18 USPS carrier routes (18 city (C)) with 16,338 residential and 1,342 business mailboxes. Routes range from 446 homes (C007) to 1,442 homes (C001); the median route has 905 homes. The Census counted 15,193 households in 78218 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 1 |
| 500–749 | 3 |
| 750–999 | 7 |
| 1,000–1,499 | 7 |
| 1,500+ | 0 |
Best routes in 78218 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route C006 — Est. median household income $104,403, 505 homes
- Route C001 — Est. median household income $96,499, 1,442 homes
- Route C026 — Est. median household income $80,266, 1,310 homes
- Route C018 — Est. median household income $65,656, 1,163 homes
- Route C007 — Est. median household income $64,323, 446 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 C012 — Est. families with children under 18 60.5%, 791 homes
- Route C022 — Est. families with children under 18 55.7%, 880 homes
- Route C026 — Est. families with children under 18 50.2%, 1,310 homes
- Route C011 — Est. families with children under 18 46.9%, 538 homes
- Route C004 — Est. families with children under 18 37.6%, 913 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 C026 — Est. owner-occupied homes 71.2%, 1,310 homes
- Route C007 — Est. owner-occupied homes 69.5%, 446 homes
- Route C004 — Est. owner-occupied homes 68.4%, 913 homes
- Route C022 — Est. owner-occupied homes 66.0%, 880 homes
- Route C018 — Est. owner-occupied homes 58.3%, 1,163 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 C006 — Est. residents who moved in the past year 29.2%, 505 homes
- Route C001 — Est. residents who moved in the past year 29.0%, 1,442 homes
- Route C019 — Est. residents who moved in the past year 26.7%, 1,061 homes
- Route C023 — Est. residents who moved in the past year 21.0%, 804 homes
- Route C025 — Est. residents who moved in the past year 19.5%, 854 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 C026 — Est. homes built 2010 or later 54.5%, 1,310 homes
- Route C012 — Est. homes built 2010 or later 25.0%, 791 homes
- Route C006 — Est. homes built 2010 or later 23.6%, 505 homes
- Route C001 — Est. homes built 2010 or later 22.1%, 1,442 homes
- Route C018 — Est. homes built 2010 or later 19.2%, 1,163 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C011 — USPS business mailboxes 259, 538 homes
- Route C012 — USPS business mailboxes 215, 791 homes
- Route C025 — USPS business mailboxes 211, 854 homes
- Route C021 — USPS business mailboxes 210, 1,006 homes
- Route C001 — USPS business mailboxes 64, 1,442 homes
Select these 5 routes on the route map
Every carrier route in 78218
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 1,442 | 64 | $96,499 | 42.5% | 7.4% | 29.0% |
| C002 | City | 566 | 33 | $33,595 | 51.1% | 16.4% | 13.9% |
| C004 | City | 913 | 8 | $62,282 | 68.4% | 37.6% | 14.3% |
| C006 | City | 505 | 54 | $104,403 | 44.8% | 5.6% | 29.2% |
| C007 | City | 446 | 3 | $64,323 | 69.5% | 12.4% | 6.4% |
| C008 | City | 897 | 28 | $60,774 | 57.0% | 19.0% | 7.9% |
| C010 | City | 977 | 36 | $62,297 | 32.0% | 14.2% | 13.7% |
| C011 | City | 538 | 259 | $55,670 | 46.5% | 46.9% | 16.7% |
| C012 | City | 791 | 215 | $44,719 | 55.6% | 60.5% | 6.0% |
| C013 | City | 1,055 | 61 | $43,002 | 53.2% | 20.2% | 8.9% |
| C015 | City | 1,130 | 62 | $48,830 | 52.1% | 12.5% | 8.5% |
| C018 | City | 1,163 | 1 | $65,656 | 58.3% | 22.3% | 2.0% |
| C019 | City | 1,061 | 14 | $44,776 | 44.1% | 31.6% | 26.7% |
| C021 | City | 1,006 | 210 | $55,741 | 54.8% | 34.1% | 18.1% |
| C022 | City | 880 | 31 | $58,749 | 66.0% | 55.7% | 10.0% |
| C023 | City | 804 | 45 | $57,367 | 36.1% | 33.4% | 21.0% |
| C025 | City | 854 | 211 | $63,527 | 40.0% | 31.1% | 19.5% |
| C026 | City | 1,310 | 7 | $80,266 | 71.2% | 50.2% | 17.7% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78218 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
- 78239 — Windcrest city, TX (2.6 mi)
- 78244 — San Antonio city, TX (3 mi)
- 78217 — San Antonio city, TX (3.4 mi)
- 78234 — San Antonio city, TX (3.4 mi)
- 78209 — San Antonio city, TX (3.6 mi)
- 78219 — San Antonio city, TX (3.9 mi)
- 78233 — San Antonio city, TX (4.6 mi)
- 78208 — San Antonio city, TX (5.3 mi)
Areas that include 78218
- San Antonio, TX ZIP codes — 64 ZIP codes
- Windcrest, TX ZIP codes — 2 ZIP codes
- Bexar County ZIP codes — 76 ZIP codes
- San Antonio ZIP code map — 121 ZIP codes
- Texas ZIP code data
Mail every home in 78218
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) 78218, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78218 in?
- 78218 is a San Antonio, TX mailing address. By land area, 96% lies inside San Antonio and 4% lies inside Windcrest.
- What county is 78218 in?
- 78218 is in Bexar County.
- What is the population of 78218?
- About 39,428 people (±3,380), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,137.
- What is the median household income in 78218?
- $57,285 (±$4,363), 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 78218?
- 18 USPS carrier routes with 16,338 residential and 1,342 business mailboxes (17,680 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78218?
- The closest, measured center to center: 78239 (2.6 mi, Windcrest), 78244 (3 mi, San Antonio), 78217 (3.4 mi, San Antonio), 78234 (3.4 mi, San Antonio), 78209 (3.6 mi, San Antonio) and 78219 (3.9 mi, San Antonio).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.