ZIP Code 76598 in Gatesville, TX

Data Last Updated: February 1, 2026
City:Gatesville, Texas
Names to Avoid:
Hilltop Unit Tdc
County:Coryell County
Timezone:Central (GMT -06:00)
Local Time:9:37:16 AM
Population:440 [See All]
Area Code:254
Classification:Unique [Company/Government]
Coordinates:31.4755, -97.7351
Land Area:0.031 sq mi
Quick Link:
https://www.zip-codes.com/zip-code/76598/zip-code-76598.asp

Download this data |

Download ZIP Boundaries |

76598 - Hilltop Unit Tdc

Gatesville, TX | Coryell County | Institution

Hilltop Unit Tdc

Entity TypeInstitution
LocationGatesville, TX
CountyCoryell
FacilityPost Office
Coordinates31.4759, -97.7350
CoverageBuilding footprint (Boundary covers 0.02 sq mi)
Key Facts
  • Exclusive ZIP dedicated to institutional mail
  • Has own Post Office designation
  • Home to Hilltop Unit Tdc
  • Delivers to 2 business addresses (no residential delivery)
  • TDCJ women's prison in Gatesville cluster
Entity Type
Institution
Facility
Post Office
Coordinates
31.4759, -97.7350
Buildings
1

About ZIP Code 76598

The Hilltop Unit, a Texas Department of Criminal Justice women's prison, operates under dedicated ZIP code 76598 in Coryell County, Texas. The facility is part of the Gatesville prison complex that serves as TDCJ's hub for female corrections in Texas. The Gatesville cluster houses multiple women's units including Crain, Murray, O'Daniel, and Woodman, with various programs for developmental disabilities, substance abuse treatment, and alternative incarceration.

The 2020 Census counted 440 residents, with 98% in institutional group quarters, consistent with an incarcerated population. The median age of 34.9 years is typical for adult correctional facilities. This compact 0.02-square-mile boundary covers the facility on State School road. Postal records show three ZIP+4 codes. This dedicated postal identity has served the facility for over two decades. Gatesville serves as the valid mailing city.

Census Data
Population:440
Median Age:34.9
Housing Units:1
Delivery Points
Residential:0
Business:2

Named Buildings

Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.

Hilltop Unit Tdc on State School

Address Format

[Recipient Name]
[Street Address]
GATESVILLE, TX 76598
Interactive charts load automatically as you scroll. Hover for data, click to explore trends, and use the menu to export.

Population & Demographics


ZIP Code 76598 has 440 residents and 1 households (average 8.00 persons per household). The median age is 34.9 years, about the same as the state (35.6) and younger than the nation (38.8). The gender split is 0.7% male and 99.3% female, which is much lower than the state male share (49.4%), making this a female-majority area. Largest groups are White (53.2%, much lower than the national average of 61.6%) and Hispanic or Latino (28.4%); Hispanic or Latino residents make up 28.4%, which is much lower than the state average (39.3%), and Other / Two or More Races share is much higher than both the state (13.6%) and national averages (8.4%).

Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2024 American Community Survey (ACS) 5-Year Estimates.
2020 Population:440Source: Census DHC
2024 ACS Population Estimate:491Source: Census ACS
2026 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:14,193.5 people per sq mile
Average Income:$0Source: Census ACS
Households:1Source: Census DHC
Average House Value:$666,666,666Source: Census ACS
Persons Per Household:8.00Source: Census DHC
Average Family Size:0.00Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group201020112102201320142015201620172018201920202021202220232024
Census ACS Population Estimate--271390410483574555505506479482570440452491
Decennial Census523------------------440--------
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 34.9

Male Median Age: 32.5

Female Median Age: 34.9

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male001000100100000000
Female00013294966512494881858100
Total00113294976512504881858100
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:23441.56%
Black:9416.70%
Hispanic:*12522.20%
Asian:10.18%
American Indian:00%
Hawaiian:00%
Other:10919.36%
Total:563100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:30.68%32.5 years
Females:43799.32%34.9 years
Total:440100%34.9 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:48398.37%
Native, born in PR, Island Areas, or abroad:00.00%
Foreign born, naturalized U.S. citizen:81.63%
Foreign born, not a U.S. citizen:01.63%
Total Population:491100%
Total Native Population:48398.37%
Total Foreign-born Population:81.63%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2024, the Median household income is $0, which is well under the national median ($80,734), and above its 2019 pre-pandemic level by $0. Family households earn a median of $0 versus $0 for nonfamily households (a difference of $0). By gender, male median income is $0 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $0 that has stayed about the same from 2011 to 2024. The labor-force participation rate is 0.0%, which is markedly below the national rate (63.5%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type20112012201320142015201620172018201920202021202220232024
Median Household Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Family Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median NonFamily Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Male Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Median Female Income$0$0$0$0$0$0$0$0$0$0$0$0$0$0
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:00.00%
Unemployed:00.00%
Not In Labor Force:491100.00%
Total:491100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:00%
Service:00%
Sales and Office:00%
Natural resources, construction, and maintenance:00%
Production, transportation, and material moving:00%
Total Civilian Employed Population:0100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Education, Health & Community


In 2024, 0.00% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.70%). High school or higher is 88.50%, which is comparable to the national rate (89.60%). The uninsured rate is -666,666,666.00%, which is far lower than the national rate (8.40%). Private coverage is -666,666,666.00%, which is far lower than the national rate (67.10%). Public coverage is -666,666,666.00%, which is far lower than the national rate (36.70%). The share of people in poverty is -666,666,666.00%, which is far lower than the national rate (8.80%). Poverty has been broadly stable, which may reflect structural barriers or offsetting gains and setbacks. Among residents ages 3+, the largest enrollment group is college (64.71%). College enrollment is 64.71%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:30.63%
9th to 12th grade, no diploma:5210.83%
High school graduate (includes equivalency):22146.04%
Some college, no degree:17235.83%
Associate's degree:326.67%
Bachelor's degree:00.00%
Graduate or professional degree:00.00%
Total:480100%
High school or higher:42588.54%
Bachelor's degree or higher:00.00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:00%
Public Insurance:00%
No Insurance:00%
Total:0100%
Has Health Insurance:00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2024)


Group20112102201320142015201620172018201920202021202220232024
% of People in Poverty0.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%-666,666,666.0%0.0%0.0%0.0%0.0%0.0%0.0%
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:00.00%
Kindergarten:00.00%
Elementary school (grades 1-8):00.00%
High school (grades 9-12):2435.29%
College or graduate school:4464.71%
Total:68100%
Early Childhood:00.00%
K-12 (Primary & Secondary School):2435.29%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 76598 is assigned to a single organization or institution. Detailed business demographics are not published for unique ZIP Codes. USPS data shows 0 residential mailboxes and 2 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:2Source: USPS
Total Delivery Receptacles:2Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:0Source: CBP
1st Quarter Payroll:$0Source: CBP
Annual Payroll:$0Source: CBP
# of Employees:0Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 76598 is located in Coryell County, Texas, within the Killeen-Temple, TX Metropolitan Statistical Area (CBSA 28660) and Texas's 31st Congressional District. This Metro area has a population of 405,300 people, about 0.11% of whom live in ZIP Code 76598. It covers 0.031 sq mi of land and a water area of 0 sq mi.

CBSA Name:Killeen-Temple, TXSource: Census
CBSA Number:28660Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:405,300Source: Census
MSA:Killeen-Temple, TX MSASource: Census
Land Area:0.031 sq miSource: Census
Water Area:--Source: Census
Congressional District:31Source: USPS
Congressional Land Area:2154.49 sq miSource: Census
PMSA:--Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:4829168Source: Census
Place Name:Gatesville city; TexasSource: Census

Adjacent & Nearby ZIP Codes


76599 | | 76597

Schools in ZIP Code 76598


We could not locate which school district 76598 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Gatesville El 2537 E Main St
Gatesville, TX 76528
District: Gatesville Independent School DistrictNearby
Gatesville H S 205 S Lovers Ln
Gatesville, TX 76528
District: Gatesville Independent School DistrictNearby
Gatesville J H 307 S Lovers Ln
Gatesville, TX 76528
District: Gatesville Independent School DistrictNearby
Gatesville Pri 308 Hornet Way
Gatesville, TX 76528
District: Gatesville Independent School DistrictNearby
Gatesville Int 311 Hornet Way
Gatesville, TX 76528
District: Gatesville Independent School DistrictNearby
Victory Private School 508 N Gray St
Killeen, TX 76541
District: Private SchoolNearby
Killeen Adventist Junior Academy 3412 Lake Rd
Killeen, TX 76543
District: Private SchoolNearby
St Joseph Catholic Academy 2901 E Rancier Ave
Killeen, TX 76543
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 76598


Central Texas College 6200 West Central Texas Expressway
Killeen, TX 76549-4199
Type: Post Secondary
Yahweh Beauty Academy 431 North 38th Street
Killeen, TX 76543-4153
Type: Post Secondary
Texas A&M University-Central Texas 1001 Leadership Place
Killeen, TX 76549
Type: Post Secondary
University Of Mary Hardin-Baylor 900 College St
Belton, TX 76513-2599
Type: Post Secondary
Central Texas Beauty College-Temple 2010 South 57th Street
Temple, TX 76504-6948
Type: Post Secondary
Mclennan Community College 1400 College Dr
Waco, TX 76708
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.

  1. U.S. Postal Service [Last Updated: 2/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 2/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 2/1/2026], https://nces.ed.gov