Zip code 78231: San Antonio, Texas

Q: What city is zip code 78231?

78231 is assigned to San Antonio, Texas. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 78231 in?

78231 is in Bexar County, Texas.

Q: What is the population of 78231?

About 9,744 people live in 78231, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 78231?

The median household income in 78231 is $109,183.

Q: What zip codes are near 78231?

The closest zip codes to 78231 are 78248, 78230, 78232, 78216, 78249.

Residential delivery areaBexar CountyCentral Time

Population

9,744

Median household income

$109K

U.S. $81K

Median home value

$402K

U.S. $333K

Median rent

$1,393/mo

U.S. $1,413

Median age

41.2

U.S. 38.9

Land area

4.1 sq mi

2,383 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 78231

78231 is a suburban zip code in San Antonio, Texas (Bexar County), covering 4.1 sq mi of land. About 9,744 people live here, or 2,383 per square mile. The median resident is 41.2 years old, compared with 38.9 nationally.

The median household earns $109,183 a year, 35% above the national median of $80,734. 5.8% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $401,800, or 3.7 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 66% of occupied homes are lived in by their owners, and renters pay a median of $1,393 a month.

66% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 20.5 minutes each way, and 19% of workers work from home. The most common jobs among working residents are in sales, healthcare and management. 29% of households speak a language other than English at home, most often Spanish.

How 78231 compares

Sorted from highest to lowest national percentile

Veterans14.7%
97th
U.S. 6.2% · TX 6.2%101st of 1,818 in TX
Bachelor's degree or higher65.7%
93rd
StrengthU.S. 35.7% · TX 33.8%78th of 1,811 in TX
Healthcare workers14.3%
93rd
U.S. 9.7% · TX 8.6%158th of 1,810 in TX
Self-employed workers13.6%
86th
U.S. 10% · TX 10.5%510th of 1,810 in TX
Per capita income$57,828
82nd
StrengthU.S. $44,673 · TX $40,752155th of 1,813 in TX
Median household income$109,183
78th
U.S. $80,734 · TX $78,476200th of 1,712 in TX
Residents 65 and older20.4%
76th
U.S. 17.2% · TX 13.4%526th of 1,818 in TX
Work from home18.5%
73rd
U.S. 15.1% · TX 14.4%266th of 1,810 in TX
Diversity index60.2
72nd
U.S. 61.4 · TX 67.1419th of 1,818 in TX
Rent-burdened renters56%
70th
U.S. 51.1% · TX 51.7%488th of 1,692 in TX
Median earnings per worker$55,945
69th
U.S. $49,666 · TX $47,575366th of 1,794 in TX
Broadband access94.2%
68th
U.S. 91% · TX 91.4%429th of 1,792 in TX
Median age41.2
66th
U.S. 38.9 · TX 35.6610th of 1,817 in TX
Median home value$401,800
62nd
U.S. $332,700 · TX $283,800212th of 1,679 in TX
Population density2,383/sq mi
61st
U.S. 95/sq mi · TX 116/sq mi396th of 1,818 in TX
Income inequality (Gini)0.449
61st
U.S. 0.483 · TX 0.478655th of 1,785 in TX
Foreign-born residents11.6%
56th
U.S. 14.1% · TX 17.6%701st of 1,818 in TX
Median gross rent$1,393
50th
U.S. $1,413 · TX $1,403440th of 1,511 in TX
Tech workers2.8%
48th
U.S. 3.8% · TX 3.8%499th of 1,810 in TX
Government workers13.3%
47th
U.S. 14.5% · TX 14.1%1,097th of 1,810 in TX
Homeownership rate66.2%
44th
U.S. 65.2% · TX 62.6%1,222nd of 1,792 in TX
Residents under 1820.8%
38th
U.S. 22% · TX 25%1,250th of 1,818 in TX
Uninsured rate4.8%
31st
U.S. 8.4% · TX 17.1%1,692nd of 1,808 in TX
Poverty rate5.8%
17th
StrengthU.S. 12.5% · TX 13.8%1,488th of 1,794 in TX
Population9,744
15th
U.S. 334,922,499 · TX 30,188,424828th of 1,818 in TX
Average commute20.5 min
15th
StrengthU.S. 26.4 min · TX 26.7 min1,417th of 1,738 in TX
Unemployment rate2.7%
12th
StrengthU.S. 5.2% · TX 5.3%1,320th of 1,810 in TX
Housing vacancy2.6%
7th
U.S. 10.1% · TX 9.4%1,728th of 1,794 in TX

Measure	78231	Bexar	TX	U.S.	National percentile	Rank in TX
Veterans	14.7%	9.6%	6.2%	6.2%	97th	101st of 1,818
Bachelor's degree or higherStrength	65.7%	31.8%	33.8%	35.7%	93rd	78th of 1,811
Healthcare workers	14.3%	9.9%	8.6%	9.7%	93rd	158th of 1,810
Self-employed workers	13.6%	9.6%	10.5%	10%	86th	510th of 1,810
Per capita incomeStrength	$57,828	$36,702	$40,752	$44,673	82nd	155th of 1,813
Median household income	$109,183	$72,341	$78,476	$80,734	78th	200th of 1,712
Residents 65 and older	20.4%	12.9%	13.4%	17.2%	76th	526th of 1,818
Work from home	18.5%	14.6%	14.4%	15.1%	73rd	266th of 1,810
Diversity index	60.2	56.8	67.1	61.4	72nd	419th of 1,818
Rent-burdened renters	56%	53.4%	51.7%	51.1%	70th	488th of 1,692
Median earnings per worker	$55,945	$42,912	$47,575	$49,666	69th	366th of 1,794
Broadband access	94.2%	91.9%	91.4%	91%	68th	429th of 1,792
Median age	41.2	34.8	35.6	38.9	66th	610th of 1,817
Median home value	$401,800	$262,200	$283,800	$332,700	62nd	212th of 1,679
Population density	2,383/sq mi	1,667/sq mi	116/sq mi	95/sq mi	61st	396th of 1,818
Income inequality (Gini)	0.449	0.463	0.478	0.483	61st	655th of 1,785
Foreign-born residents	11.6%	13.8%	17.6%	14.1%	56th	701st of 1,818
Median gross rent	$1,393	$1,354	$1,403	$1,413	50th	440th of 1,511
Tech workers	2.8%	3.8%	3.8%	3.8%	48th	499th of 1,810
Government workers	13.3%	15.1%	14.1%	14.5%	47th	1,097th of 1,810
Homeownership rate	66.2%	58.8%	62.6%	65.2%	44th	1,222nd of 1,792
Residents under 18	20.8%	24.7%	25%	22%	38th	1,250th of 1,818
Uninsured rate	4.8%	16%	17.1%	8.4%	31st	1,692nd of 1,808
Poverty rateStrength	5.8%	14.6%	13.8%	12.5%	17th	1,488th of 1,794
Population	9,744	2,067,341	30,188,424	334,922,499	15th	828th of 1,818
Average commuteStrength	20.5 min	25.7 min	26.7 min	26.4 min	15th	1,417th of 1,738
Unemployment rateStrength	2.7%	5.8%	5.3%	5.2%	12th	1,320th of 1,810
Housing vacancy	2.6%	8.5%	9.4%	10.1%	7th	1,728th of 1,794

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

18%

5–17

12%

18–24

13%

25–34

10%

35–44

12%

45–54

11%

55–64

65–74

11%

75+

Median age

41.2

Under 18

20.8%

65 and over

20.4%

Race and ethnicity

White49%
Black5%
Hispanic39%
Asian4%
Native American0.4%
Pacific Islander0%
Other0%
Multiracial3%

Diversity index

60.2

U.S. 61.4

Foreign-born

11.6%

U.S. 14.1%

Born in state

57.5%

Language spoken at home (households)

English only

71%

Spanish

22%

Other Indo-European

Asian / Pacific

0.9%

Other

Households

Households: 3,978
Average household size: 2.4
Family households: 64.4%
Married couples: 50.1%
Living alone: 30.8%
Veterans (of adults): 14.7%
Male / female: 49% / 51%

Income and poverty

Household income distribution

<$25k

$25–50k

15%

$50–75k

14%

$75–100k

$100–150k

24%

$150–200k

12%

$200k+

19%

Median household income

78231

$109,183

Bexar Co.

$72,341

Texas

$78,476

United States

$80,734

Per capita income

$57,828

U.S. $44,673

Poverty rate

5.8%

U.S. 12.5%

Households earning $150K+

30.6%

U.S. 23%

Income inequality (Gini)

0.449

U.S. 0.483

Housing

Median home value

78231

$401,800

Bexar Co.

$262,200

Texas

$283,800

United States

$332,700

Median gross rent

78231

$1,393

Bexar Co.

$1,354

Texas

$1,403

United States

$1,413

Types of housing

Single-family

72%

2–4 units

0.8%

5–19 units

12%

20+ units

15%

Mobile home

Boat, RV, van

Housing units: 4,083
Owner-occupied: 66.2%
Vacant: 2.6%
Median year built: 1987
Median rooms: 5.9
Renters paying 30%+ of income: 56%
Renters paying 50%+ of income: 15.7%
Home value to income: 3.7× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

77%

Carpooled

Transit

Walked

0.7%

Bicycle

Worked from home

18%

Other

0.2%

Commute time (one way)

<10 min

11%

10–19

29%

20–29

40%

30–44

18%

45–59

60+

0.5%

Average commute

20.5 min

U.S. 26.4 min

Unemployment

2.7%

U.S. 5.2%

In labor force

64.3%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Sales

14%

Healthcare

14%

Management

14%

Business and finance

Education

Legal and social services

Food service

Office and admin

Construction and repair

Cleaning and personal care

Computer and math

Police and fire

Engineering and science

Transportation and moving

Production

Arts, media and sports

Farming, fishing and forestry

Industries

Health care and social assistance

20%

Retail

12%

Education

10%

Professional and technical services

10%

Finance, insurance and real estate

Restaurants and hotels

Wholesale

Admin, support and management

Public administration

Manufacturing

Construction

Other services

Arts and recreation

Transportation, warehousing and utilities

0.9%

Information

0.4%

Agriculture and mining

Median earnings per worker

$55,945

U.S. $49,666

Self-employed

13.6%

U.S. 10%

Government workers

13.3%

U.S. 14.5%

Nonprofit workers

15.1%

U.S. 8.8%

Median earnings by type of work

Type of work	78231	U.S.
Management, business, science and arts	$90,262	$74,888
Service	$22,825	$26,804
Sales and office	$39,145	$40,476
Construction and maintenance	$29,296	$49,199
Production and transportation	$35,329	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

0.4%

High school

13%

Some college

14%

Associate's

Bachelor's

35%

Graduate

31%

High school graduate or higher: 99.6%
Bachelor's degree or higher: 65.7%
Graduate or professional degree: 31.1%
Households with broadband: 94.2%
Cable, fiber or DSL: 82.7%
No internet access: 4.9%
Without health insurance: 4.8%
Limited-English households: 4.6%

Geography

City (USPS): San Antonio
State: Texas
County: Bexar County
Center point: 29.5810° N, 98.5425° W
Land area: 4.1 sq mi
Water area: under 0.1 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Shavano Park59% of zip
San Antonio41% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 78231

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
78248	San Antonio, TX	1.2 mi	14,488	$130,552	$479,500
78230	San Antonio, TX	2.5 mi	41,387	$73,529	$386,600
78232	San Antonio, TX	4 mi	36,636	$85,273	$362,000
78216	San Antonio, TX	4.2 mi	41,180	$59,110	$310,700
78249	San Antonio, TX	4.5 mi	63,439	$80,565	$305,400
78213	San Antonio, TX	4.6 mi	40,526	$55,884	$216,400
78258	San Antonio, TX	4.9 mi	52,448	$117,835	$480,500
78257	San Antonio, TX	5.1 mi	10,992	$81,301	$670,400
78240	San Antonio, TX	5.4 mi	57,921	$63,351	$257,500
78229	San Antonio, TX	5.6 mi	35,664	$46,574	$228,900
78256	San Antonio, TX	5.8 mi	13,453	$74,977	$579,300
78201	San Antonio, TX	7.8 mi	41,981	$47,121	$197,800

Zip codes like 78231 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 78231

What city is zip code 78231?

78231 is assigned to San Antonio, Texas. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 78231 in?

78231 is in Bexar County, Texas.

What is the population of 78231?

About 9,744 people live in 78231, according to the Census Bureau's American Community Survey.

What time zone is 78231 in?

78231 is in Central Time.

What is the median household income in 78231?

The median household income in 78231 is $109,183.

What zip codes are near 78231?

The closest zip codes to 78231 are 78248, 78230, 78232, 78216, 78249.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 78231, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.