ZIP Codes of Frio County, TX

Population & People
Population & People
Total Population
18,505
Household Income
Household Income
Median Income
$64,187
Housing
Housing
Total Housing Units
6,422
Business & Economy
Business & Economy
Total Businesses
303
Employment
Employment
Employment Rate
49.38%
Education
Education
Bachelor's Degree+
10.94%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:830
Timezone:Central (GMT -06:00)
Local Time:11:55:14 PM
Population:18,505 [See All]
FIPS:48163
Land Area:1,174 sq mi
Water Area:1 sq mi
Coordinates:28.8993, -99.0849
Quick Link:
https://www.zip-codes.com/county/tx-frio.asp
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Texas's #128 most populous county
18,505 residents across 4 ZIPs — #128 of 254 Texas counties.

Standout ZIPs in this County


Most Populous
Pearsall · 10,500 people
56.7% of county total
Highest Income
Bigfoot · $70,559 median
1.1× county average
Largest Land Area
Pearsall · 541.3 sq mi
Spans the most ground
Fastest Growth
Dilley · 13.8% (10-yr)
4,876 → 5,551 residents
Most Educated
Dilley · 14.4% bachelor's+
543 of 3,773 adults 25+

Things worth knowing about Frio County


18,505 residents live across 4 ZIPs covering 1,174 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 18,151 to 18,505 from 2014 to 2024 — a +2.0% change. 3 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 78005 (Bigfoot, $70,559 median) and poorest ZIP 78017 (Dilley, $59,808) are 26.8 miles apart — a 1.2× income gap across local geography.

Median home values vary 2.6× across this county — from $103,100 in 78017 (Dilley) to $263,000 in 78005 (Bigfoot).

Density varies across the county — from 6 people/sq mi in 78057 (Moore) to 19 in 78061 (Pearsall).

Educational attainment ranges from 5.4% bachelor's+ in 78005 (Bigfoot) to 14.4% in 78017 (Dilley) — the breadth of educational profiles across the area.

Within Texas, this is the #128 most populous of 254 counties and ranks #152 for median household income .

Weighted by population, the typical household earns about $61,272 across the county — reflecting what a typical resident sees, not a simple ZIP average.

10.9% of adults age 25+ hold a bachelor's degree or higher (1,310 of 11,978 reporting).

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

Stories about Frio 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
1,174
square miles
Avg density
15.8
people per sq mi
Population
18,505
across 4 ZIPs
Pearsall
541.3 sq mi
10,500 residents
Dilley
330.4 sq mi
5,551 residents
Bigfoot
157.0 sq mi
1,573 residents

All ZIP Codes in Frio County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
78061PearsallStandard10,500$60,247541.3-13.4%
78017DilleyStandard5,551$59,808330.413.8%
78005BigfootStandard1,573$70,559157.0350.7%
78057MooreStandard881$66,134145.210.0%

Adjacent & Nearby Counties