77521 ZIP Code — Baytown, TX
Harris County, Texas
ZIP code 77521 is located in Baytown, Texas, within Harris County. It covers approximately 49.27 square miles and serves a population of 66,215 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 281/832/346.
About ZIP code 77521
The housing stock consists of a mix of housing types. Most homes were built in the 2000s, giving the area an established character. Median home value is $202,100. Owner-occupancy sits near the national average at 59%.
Median household income is $74,948.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.
College attainment at 18% is below the national average, consistent with a trades and production-oriented local economy.
25% of residents lack health insurance, above the national average.
66,215
population
49.27
sq mi land
Standard
ZIP type
Central (CT)
timezone
77521 ZIP code map
Cities in ZIP code 77521
Below are the cities the US Postal Service accepts for ZIP code 77521. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Baytown | Preferred |
Nearby ZIP codes
77562 Highlands (4.8 mi)
77562 Highlands (4.8 mi)
77523 Baytown (6.1 mi)
77523 Baytown (6.1 mi)
77523 Baytown (6.1 mi)
77523 Baytown (6.1 mi)
77520 Baytown (6.1 mi)
77520 Baytown (6.1 mi)
77520 Baytown (6.1 mi)
77520 Baytown (6.1 mi)
77530 Channelview (8.4 mi)
77530 Channelview (8.4 mi)
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 66,215 |
| Population density | 1,344 / sq mi |
| State FIPS | 48 |
| County FIPS | 201 |
| Geography | |
|---|---|
| Land area | 49.27 sq mi |
| Water area | 0.93 sq mi |
| Latitude | 29.8029 |
| Longitude | -94.9710 |
| Timezone | Central (CT) |
| Area code | 281/832/346 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 38.7% | 40.0% | 39.5% |
| $50k – $100k | 33.9% | 29.5% | 30.1% |
| $100k – $200k | 23.2% | 21.5% | 22.6% |
| Over $200k | 4.2% | 9.0% | 7.8% |
Demographics & statistics
66,215
Population
1,344
People per sq mi
33.0
Median age
$74,948
Median household income
$32,344
Per capita income
$202,100
Median home value
$1,285
Median monthly rent
59.0%
Home ownership
13.9%
Poverty rate
8.6%
Unemployment
15,295
Housing units
18.0%
Bachelor's or higher
Age distribution
Male
Female
2,782
Under 5
2,660
2,522
5–9
2,412
3,072
10–14
2,937
2,467
15–19
2,358
2,400
20–24
2,295
5,000
25–34
4,781
5,111
35–44
4,887
4,147
45–54
3,965
1,216
55–59
1,163
1,798
60–64
1,719
2,091
65–74
1,999
857
75–84
819
387
85+
370
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 19,120 | 28.9% |
| 18 and over | 47,095 | 71.1% |
| 65 and over | 6,523 | 9.9% |
| Median age | 33.0 years | |
Race & ethnicity
White
41.6%
Hispanic or Latino
20.6%
Black or African American
14%
Two or more races
11.9%
Other race
9.7%
Asian
1.7%
American Indian / Alaska Native
0.4%
Native Hawaiian / Pacific Islander
0.1%
| Group | Count | % |
|---|---|---|
| White | 34,709 | 41.6% |
| Hispanic or Latino | 17,142 | 20.6% |
| Black or African American | 11,656 | 14% |
| Two or more races | 9,919 | 11.9% |
| Other race | 8,104 | 9.7% |
| Asian | 1,427 | 1.7% |
| American Indian / Alaska Native | 296 | 0.4% |
| Native Hawaiian / Pacific Islander | 104 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 38.7% | 40.0% | 39.5% |
| $50k – $100k | 33.9% | 29.5% | 30.1% |
| $100k – $200k | 23.2% | 21.5% | 22.6% |
| Over $200k | 4.2% | 9.0% | 7.8% |
Under $10k
4.6%
$10k–$15k
3.9%
$15k–$25k
7.0%
$25k–$35k
6.6%
$35k–$50k
11.6%
$50k–$75k
16.4%
$75k–$100k
16.0%
$100k–$150k
18.6%
$150k–$200k
9.1%
$200k+
6.2%
| Range | % of households |
|---|---|
| Under $10k | 4.6% |
| $10k–$15k | 3.9% |
| $15k–$25k | 7.0% |
| $25k–$35k | 6.6% |
| $35k–$50k | 11.6% |
| $50k–$75k | 16.4% |
| $75k–$100k | 16.0% |
| $100k–$150k | 18.6% |
| $150k–$200k | 9.1% |
| $200k+ | 6.2% |
| Median income | $74,948 |
Housing
Home values
Under $50k
8.2%
$50k–$100k
4.2%
$100k–$150k
14.0%
$150k–$200k
22.6%
$200k–$300k
39.0%
$300k–$500k
10.7%
$500k–$1M
1.1%
$1M+
0.3%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $202,100 |
| Median rent / month | $1,285 |
| Owner occupied | 59.0% |
| Renter occupied | 41.0% |
| Vacant | 5.7% |
| Single-family detached | 60.8% |
| Large apartment buildings | 9.9% |
| Mobile homes | 7.3% |
| Median rooms | 5.4 |
| Avg household size (owned) | 3.03 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.8% |
| 2010–2019 | 20.8% |
| 2000–2009 | 22.7% |
| 1990–1999 | 11.4% |
| 1980–1989 | 15.4% |
| 1970–1979 | 19.3% |
| 1960–1969 | 6.2% |
| 1950–1959 | 2.5% |
| 1940–1949 | 0.5% |
| 1939 or earlier | 0.3% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 2.4% |
| 1 bedroom | 13.8% |
| 2 bedrooms | 19.8% |
| 3 bedrooms | 43.1% |
| 4 bedrooms | 19.2% |
| 5+ bedrooms | 1.8% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 5.0% |
| 1 vehicle | 32.2% |
| 2 vehicles | 39.3% |
| 3 or more | 23.5% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 33.9% |
| Electricity | 63.9% |
| Propane / LP gas | 1.0% |
| Fuel oil | 0.1% |
| Solar | 0.3% |
| No fuel used | 0.3% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 10,519 | 44.7% |
| Cohabiting couple | 2,033 | 8.6% |
| Male householder, no spouse | 5,085 | 21.6% |
| Female householder, no spouse | 5,886 | 25.0% |
| Households with children under 18 | 9,510 | 40.4% |
| Households with seniors (65+) | 4,649 | 19.8% |
| Average household size | 2.80 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 39.3% | 34.5% |
| Married | 45.7% | 43.8% |
| Separated | 1.3% | 4.3% |
| Widowed | 2.5% | 6.4% |
| Divorced | 11.2% | 11.0% |
Education
Less than 9th grade
7.8%
Some HS, no diploma
10.5%
HS graduate
28.4%
Some college, no degree
23.8%
Associate's degree
11.6%
Bachelor's degree
12.3%
Graduate / professional
5.7%
| Metric | % |
|---|---|
| HS diploma or higher | 81.7% |
| Bachelor's or higher | 18.0% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 798 | 4.4% |
| Kindergarten | 658 | 3.7% |
| Elementary school | 9,003 | 50.2% |
| High school | 3,883 | 21.6% |
| College / grad school | 3,600 | 20.1% |
Employment
Industry of employment
Education & healthcare
19.8%
Manufacturing
16.0%
Construction
12.9%
Arts, food & hospitality
9.9%
Retail trade
9.0%
Transportation & utilities
8.4%
Professional & management
7.4%
Finance & real estate
4.6%
Other services
3.6%
Public administration
3.3%
Wholesale trade
2.1%
Agriculture & mining
1.8%
Information
1.1%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 31.0% |
| Service | 15.3% |
| Sales & office | 17.7% |
| Natural resources & construction | 15.2% |
| Production & transportation | 20.8% |
Employment type
| Type | % |
|---|---|
| Private sector | 79.7% |
| Government | 15.2% |
| Self-employed | 4.9% |
| Unpaid family workers | 0.2% |
Commute
| Method | % |
|---|---|
| Drive alone | 82.8% |
| Carpool | 9.9% |
| Public transit | 1.3% |
| Walk | 0.7% |
| Work from home | 4.4% |
| Other means | 1.0% |
| Avg commute (minutes) | 26.2 |
Poverty
All people
13.9%
Under 18 years
19.2%
18 and over
11.8%
Married-couple families
6.5%
Female-led households
30.8%
Income support
| Source | % of households |
|---|---|
| Social Security | 21.3% |
| Retirement income | 15.9% |
| Supplemental Security | 5.2% |
| Cash public assistance | 1.3% |
| Food stamps / SNAP | 12.1% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 37.6% |
| High blood pressure | 32.3% |
| High cholesterol | 34.3% |
| Diabetes | 11.3% |
| Heart disease | 5.5% |
| Stroke | 2.9% |
| Asthma | 9.2% |
| Arthritis | 19.7% |
| Kidney disease | 2.8% |
| Pulmonary disease | 6.2% |
| Cancer | 5.0% |
| Behavior / access | % |
|---|---|
| Smoking | 18.1% |
| Binge drinking | 19.8% |
| No physical activity | 27.6% |
| Less than 7 hrs sleep | 34.0% |
| Depression | 20.8% |
| Fair or poor health | 17.3% |
| Poor mental health | 16.1% |
| Poor physical health | 11.2% |
| No health insurance | 30.6% |
| Visited doctor (checkup) | 70.6% |
| Visited dentist | 51.7% |
| Cholesterol screening | 87.7% |
| Teeth loss | 16.5% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 3,033 | 6.5% |
| Disability | % |
|---|---|
| Any disability | 10.7% |
| Under 18 | 4.7% |
| 18–64 years | 8.8% |
| 65 and over | 41.4% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 54.7% |
| Public insurance | 27.2% |
| No insurance | 24.6% |
| Uninsured under 19 | 21.8% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 60,773 | 91.8% |
| Spanish | 9,355 | 15.4% |
| Other Indo-European | 8,736 | 14.4% |
| Asian & Pacific Islander | 229 | 0.4% |
| Other languages | 366 | 0.6% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 53,678 | 81.1% |
| Born in same state | 52,501 | 79.3% |
| Born in different state | 41,762 | 63.1% |
| Foreign born | 1,177 | 1.8% |
| Naturalized citizen | 12,537 | 18.9% |
| Not a US citizen | 4,801 | 38.3% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 3,205 | 4.8% |
| French | 2,758 | 4.2% |
| Arab | 1,785 | 2.7% |
| German | 170 | 0.3% |
| Ancestry | Count | % |
|---|---|---|
| English | 160 | 0.2% |
| Polish | 78 | 0.1% |
| Dutch | 19 | 0% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 35.5% |
| Internet access | 96.2% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 77521
What part of Baytown is ZIP code 77521?
ZIP code 77521 covers a portion of Baytown, Texas, within Harris County.
What county is ZIP code 77521 in?
ZIP code 77521 falls within Harris County, Texas.
What is the population of ZIP code 77521?
ZIP code 77521 has an estimated population of 66,215 residents, with a density of 1,344 people per square mile.
What is the typical home value in ZIP code 77521?
The median home value in ZIP code 77521 is $202,100.
What is the median household income in ZIP code 77521?
The median household income in ZIP code 77521 is $74,948, below the national median of ~$75,000.
What timezone is ZIP code 77521 in?
ZIP code 77521 observes the CST timezone.