ZIP Codes of Hill County, TX

Population & People
Population & People
Total Population
36,669
Household Income
Household Income
Median Income
$70,603
Housing
Housing
Total Housing Units
16,234
Business & Economy
Business & Economy
Total Businesses
643
Employment
Employment
Employment Rate
53.89%
Education
Education
Bachelor's Degree+
18.16%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 15 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:15 ZIP Codes (13 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:254
Timezone:Central (GMT -06:00)
Local Time:2:13:56 PM
Population:36,669 [See All]
FIPS:48217
Land Area:994 sq mi
Water Area:29 sq mi
Coordinates:31.9698, -97.0570
Quick Link:
https://www.zip-codes.com/county/tx-hill.asp
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Texas's #85 most populous county
36,669 residents across 15 ZIPs — #85 of 254 Texas counties.

Standout ZIPs in this County


Most Populous
Hillsboro · 11,494 people
31.3% of county total
Highest Income
Bynum · $97,083 median
1.4× county average
Largest Land Area
Hillsboro · 182.4 sq mi
Spans the most ground
Fastest Growth
Aquilla · 43.8% (10-yr)
1,006 → 1,447 residents
Most Educated
Whitney · 21.5% bachelor's+
1,633 of 7,601 adults 25+

Things worth knowing about Hill County


36,669 residents live across 15 ZIPs covering 994 sq mi, served by 15 distinct USPS-recognized cities.

Population moved from 34,970 to 36,669 from 2014 to 2024 — a +4.9% change. 8 ZIPs gained residents, 7 lost.

The county's wealthiest ZIP 76631 (Bynum, $97,083 median) and poorest ZIP 76660 (Malone, $49,375) are 5.7 miles apart — a 2.0× income gap across local geography.

Median home values vary 2.6× across this county — from $93,000 in 76666 (Mertens) to $241,300 in 76621 (Abbott).

Density varies across the county — from 9 people/sq mi in 76666 (Mertens) to 75 in 76692 (Whitney).

Educational attainment ranges from 10.0% bachelor's+ in 76636 (Covington) to 31.4% in 76621 (Abbott) — the breadth of educational profiles across the area.

Within Texas, this is the #85 most populous of 254 counties and ranks #99 for median household income .

Weighted by population, the typical household earns about $64,157 across the county — reflecting what a typical resident sees, not a simple ZIP average.

18.2% of adults age 25+ hold a bachelor's degree or higher (4,583 of 25,240 reporting).

13 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Hill County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
994
square miles
Avg density
36.9
people per sq mi
Population
36,669
across 15 ZIPs
Hillsboro
182.4 sq mi
11,494 residents
Whitney
131.0 sq mi
9,853 residents
Hubbard
106.7 sq mi
2,777 residents

All ZIP Codes in Hill County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
76645HillsboroStandard11,494$63,737182.42.8%
76692WhitneyStandard9,853$55,149131.0-0.8%
76055ItascaStandard3,577$80,02585.821.6%
76648HubbardStandard2,777$54,669106.78.1%
76636CovingtonStandard1,748$69,01852.024.5%
76627BlumStandard1,736$70,37590.07.8%
76622AquillaStandard1,447$74,16754.543.8%
76673Mount CalmStandard1,196$63,75089.8-13.4%
76621AbbottStandard1,104$81,93270.9-3.6%
76660MaloneStandard572$49,37534.413.5%
76631BynumStandard455$97,08340.9-6.4%
76676PenelopeStandard344$70,62524.1-22.3%
76666MertensStandard26129.331.8%
76650IrenePO Box55$61,4580.0-40.9%
76628BrandonPO Box50$97,0832.3-36.7%

Adjacent & Nearby Counties