78257 ZIP Code — San Antonio, TX
Bexar County, Texas
ZIP code 78257 is located in San Antonio, Texas, within Bexar County. It covers approximately 28.50 square miles and serves a population of 9,783 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 830.
About ZIP code 78257
The housing stock consists of a significant share of large multi-unit buildings. Much of the housing stock is relatively new, reflecting recent development activity. Median home value is $484,800. Renters make up the majority at 61%, typical of denser urban areas.
The gap between median ($74,437) and mean household income suggests income inequality — a small number of higher earners pull the average up.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 25 minutes is near the national average.
Educational attainment is high — 54% of residents hold a bachelor's degree or higher, well above the national average of 33%.
9,783
population
28.50
sq mi land
Standard
ZIP type
Central (CT)
timezone
78257 ZIP code map
Cities in ZIP code 78257
Below are the cities the US Postal Service accepts for ZIP code 78257. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| San Antonio | Acceptable |
| San Antonio | Preferred |
Nearby ZIP codes
78258 San Antonio (4.4 mi)
78256 San Antonio (4.7 mi)
78255 San Antonio (5.8 mi)
78260 San Antonio (6.2 mi)
78015 Boerne (6.3 mi)
78248 San Antonio (6.9 mi)
78231 San Antonio (7.4 mi)
78249 San Antonio (7.7 mi)
78232 San Antonio (8.9 mi)
78230 San Antonio (9.3 mi)
78259 San Antonio (10.3 mi)
78261 San Antonio (10.9 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 9,783 |
| Population density | 343 / sq mi |
| State FIPS | 48 |
| County FIPS | 029 |
| Geography | |
|---|---|
| Land area | 28.50 sq mi |
| Water area | 0.16 sq mi |
| Latitude | 29.6760 |
| Longitude | -98.5761 |
| Timezone | Central (CT) |
| Area code | 830 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 34.6% | 43.3% | 39.5% |
| $50k – $100k | 23.8% | 31.4% | 30.1% |
| $100k – $200k | 24.2% | 19.9% | 22.6% |
| Over $200k | 17.4% | 5.4% | 7.8% |
Demographics & statistics
9,783
Population
343
People per sq mi
37.2
Median age
$74,437
Median household income
$67,866
Per capita income
$484,800
Median home value
$1,607
Median monthly rent
38.7%
Home ownership
9.1%
Poverty rate
1.2%
Unemployment
2,956
Housing units
54.3%
Bachelor's or higher
Age distribution
Male
Female
234
Under 5
206
219
5–9
193
248
10–14
219
242
15–19
214
511
20–24
452
1,056
25–34
933
820
35–44
725
634
45–54
561
325
55–59
288
160
60–64
141
394
65–74
349
270
75–84
239
80
85+
70
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 1,717 | 17.6% |
| 18 and over | 8,066 | 82.4% |
| 65 and over | 1,402 | 14.3% |
| Median age | 37.2 years | |
Race & ethnicity
White
57.3%
Two or more races
15.4%
Hispanic or Latino
14.3%
Asian
5.9%
Black or African American
4.9%
Other race
2.2%
| Group | Count | % |
|---|---|---|
| White | 6,542 | 57.3% |
| Two or more races | 1,757 | 15.4% |
| Hispanic or Latino | 1,632 | 14.3% |
| Asian | 676 | 5.9% |
| Black or African American | 558 | 4.9% |
| Other race | 250 | 2.2% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 34.6% | 43.3% | 39.5% |
| $50k – $100k | 23.8% | 31.4% | 30.1% |
| $100k – $200k | 24.2% | 19.9% | 22.6% |
| Over $200k | 17.4% | 5.4% | 7.8% |
Under $10k
7.1%
$10k–$15k
2.5%
$15k–$25k
5.7%
$25k–$35k
8.8%
$35k–$50k
9.8%
$50k–$75k
16.5%
$75k–$100k
13.7%
$100k–$150k
17.6%
$150k–$200k
5.5%
$200k+
12.8%
| Range | % of households |
|---|---|
| Under $10k | 7.1% |
| $10k–$15k | 2.5% |
| $15k–$25k | 5.7% |
| $25k–$35k | 8.8% |
| $35k–$50k | 9.8% |
| $50k–$75k | 16.5% |
| $75k–$100k | 13.7% |
| $100k–$150k | 17.6% |
| $150k–$200k | 5.5% |
| $200k+ | 12.8% |
| Median income | $74,437 |
Housing
Home values
Under $50k
7.2%
$50k–$100k
3.1%
$100k–$150k
4.0%
$150k–$200k
2.7%
$200k–$300k
7.1%
$300k–$500k
26.8%
$500k–$1M
35.8%
$1M+
13.4%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $484,800 |
| Median rent / month | $1,607 |
| Owner occupied | 38.7% |
| Renter occupied | 61.3% |
| Vacant | 14.5% |
| Single-family detached | 30.5% |
| Large apartment buildings | 43.4% |
| Mobile homes | 4.1% |
| Median rooms | 3.7 |
| Avg household size (owned) | 2.30 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.6% |
| 2010–2019 | 68.0% |
| 2000–2009 | 15.5% |
| 1990–1999 | 10.3% |
| 1980–1989 | 1.4% |
| 1970–1979 | 2.6% |
| 1960–1969 | 0.0% |
| 1950–1959 | 0.3% |
| 1940–1949 | 1.3% |
| 1939 or earlier | 0.0% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 4.8% |
| 1 bedroom | 32.3% |
| 2 bedrooms | 29.1% |
| 3 bedrooms | 17.1% |
| 4 bedrooms | 13.6% |
| 5+ bedrooms | 3.1% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 3.4% |
| 1 vehicle | 48.9% |
| 2 vehicles | 39.0% |
| 3 or more | 8.8% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 22.3% |
| Electricity | 75.8% |
| Propane / LP gas | 1.6% |
| No fuel used | 0.3% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 1,736 | 32.7% |
| Cohabiting couple | 478 | 9.0% |
| Male householder, no spouse | 1,527 | 28.8% |
| Female householder, no spouse | 1,560 | 29.4% |
| Households with children under 18 | 966 | 18.2% |
| Households with seniors (65+) | 943 | 17.8% |
| Average household size | 1.84 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 46.2% | 32.1% |
| Married | 44.2% | 44.9% |
| Separated | 3.1% | 1.4% |
| Widowed | 2.8% | 10.5% |
| Divorced | 3.6% | 11.2% |
Education
Less than 9th grade
1.5%
Some HS, no diploma
1.0%
HS graduate
13.7%
Some college, no degree
18.8%
Associate's degree
10.7%
Bachelor's degree
31.8%
Graduate / professional
22.5%
| Metric | % |
|---|---|
| HS diploma or higher | 97.5% |
| Bachelor's or higher | 54.3% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 67 | 3.0% |
| Kindergarten | 144 | 6.5% |
| Elementary school | 707 | 32.0% |
| High school | 398 | 18.0% |
| College / grad school | 896 | 40.5% |
Employment
Industry of employment
Education & healthcare
26.9%
Professional & management
13.7%
Finance & real estate
12.6%
Retail trade
9.0%
Manufacturing
8.0%
Arts, food & hospitality
7.8%
Wholesale trade
6.4%
Construction
5.4%
Other services
3.5%
Public administration
2.5%
Transportation & utilities
2.4%
Information
1.8%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 61.7% |
| Service | 13.6% |
| Sales & office | 18.5% |
| Natural resources & construction | 0.7% |
| Production & transportation | 5.6% |
Employment type
| Type | % |
|---|---|
| Private sector | 86.9% |
| Government | 7.2% |
| Self-employed | 5.9% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 79.1% |
| Carpool | 7.5% |
| Public transit | 0.0% |
| Walk | 0.0% |
| Work from home | 13.2% |
| Other means | 0.2% |
| Avg commute (minutes) | 25.3 |
Poverty
All people
9.1%
Under 18 years
5.8%
18 and over
9.8%
Married-couple families
7.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 18.2% |
| Retirement income | 9.0% |
| Supplemental Security | 0.8% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 2.5% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 34.1% |
| High blood pressure | 33.5% |
| High cholesterol | 36.3% |
| Diabetes | 10.7% |
| Heart disease | 5.8% |
| Stroke | 2.3% |
| Asthma | 8.2% |
| Arthritis | 21.4% |
| Kidney disease | 2.6% |
| Pulmonary disease | 4.8% |
| Cancer | 6.6% |
| Behavior / access | % |
|---|---|
| Smoking | 10.6% |
| Binge drinking | 17.5% |
| No physical activity | 16.8% |
| Less than 7 hrs sleep | 31.7% |
| Depression | 19.9% |
| Fair or poor health | 12.5% |
| Poor mental health | 12.7% |
| Poor physical health | 8.5% |
| No health insurance | 20.0% |
| Visited doctor (checkup) | 73.1% |
| Visited dentist | 66.7% |
| Cholesterol screening | 91.8% |
| Teeth loss | 8.1% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 531 | 6.7% |
| Disability | % |
|---|---|
| Any disability | 10.0% |
| Under 18 | 5.5% |
| 18–64 years | 7.7% |
| 65 and over | 26.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 80.9% |
| Public insurance | 20.7% |
| No insurance | 9.5% |
| Uninsured under 19 | 6.9% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 9,343 | 95.5% |
| Spanish | 925 | 9.9% |
| Other Indo-European | 715 | 7.7% |
| Asian & Pacific Islander | 22 | 0.2% |
| Other languages | 96 | 1.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 7,811 | 79.8% |
| Born in same state | 7,604 | 77.7% |
| Born in different state | 4,816 | 49.2% |
| Foreign born | 207 | 2.1% |
| Naturalized citizen | 1,972 | 20.2% |
| Not a US citizen | 1,403 | 71.1% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Arab | 1,106 | 11.3% |
| Italian | 613 | 6.3% |
| French | 593 | 6.1% |
| English | 33 | 0.3% |
| Ancestry | Count | % |
|---|---|---|
| Polish | 32 | 0.3% |
| Dutch | 29 | 0.3% |
| German | 19 | 0.2% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 54.2% |
| Internet access | 97.8% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 78257
What city is ZIP code 78257 in?
ZIP code 78257 is primarily assigned to San Antonio, Texas.
What county is ZIP code 78257 in?
ZIP code 78257 falls within Bexar County, Texas.
Is ZIP code 78257 mostly rentals?
61% of occupied units in ZIP code 78257 are renter-occupied.
How educated is the population of ZIP code 78257?
54% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What is the typical home value in ZIP code 78257?
The median home value in ZIP code 78257 is $484,800.
What is the population of ZIP code 78257?
ZIP code 78257 has an estimated population of 9,783 residents, with a density of 343 people per square mile.
What timezone is ZIP code 78257 in?
ZIP code 78257 observes the CST timezone.