ZIP Codes of Clay County, IN

Population & People
Population & People
Total Population
26,722
Household Income
Household Income
Median Income
$70,163
Housing
Housing
Total Housing Units
11,999
Business & Economy
Business & Economy
Total Businesses
489
Employment
Employment
Employment Rate
59.05%
Education
Education
Bachelor's Degree+
20.44%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 10 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:10 ZIP Codes (6 Standard, 4 PO Box, 0 Unique) [See All]
Area Codes:812 / 930
Timezone:Eastern (GMT -05:00)
Local Time:2:12:05 PM
Population:26,722 [See All]
FIPS:18021
CBSA:Terre Haute, IN
Land Area:367 sq mi
Water Area:3 sq mi
Coordinates:39.4344, -87.1167
Quick Link:
https://www.zip-codes.com/county/in-clay.asp
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Indiana's #60 most populous county
26,722 residents across 10 ZIPs — #60 of 92 Indiana counties.

Standout ZIPs in this County


Most Populous
Brazil · 18,625 people
69.7% of county total
Highest Income
Centerpoint · $102,991 median
1.5× county average
Largest Land Area
Brazil · 152.3 sq mi
Spans the most ground
Fastest Growth
Clay City · 38.5% (10-yr)
1,830 → 2,534 residents
Most Educated
Centerpoint · 30.6% bachelor's+
371 of 1,213 adults 25+

Things worth knowing about Clay County


26,722 residents live across 10 ZIPs covering 367 sq mi, served by 10 distinct USPS-recognized cities.

Population moved from 27,186 to 26,681 from 2014 to 2024 — a -1.9% change. 4 ZIPs gained residents, 5 lost.

The county's wealthiest ZIP 47840 (Centerpoint, $102,991 median) and poorest ZIP 47881 (Staunton, $51,146) are 8.6 miles apart — a 2.0× income gap across local geography.

Median home values vary 2.3× across this county — from $86,100 in 47881 (Staunton) to $201,500 in 47837 (Carbon).

Density varies 553× across the county — from 22 people/sq mi in 47833 (Bowling Green) to 12,091 in 47881 (Staunton).

Educational attainment ranges from 2.9% bachelor's+ in 47857 (Knightsville) to 30.6% in 47840 (Centerpoint) — the breadth of educational profiles across the area.

Within Indiana, this is the #60 most populous of 92 counties and ranks #57 for median household income .

Weighted by population, the typical household earns about $71,679 across the county — reflecting what a typical resident sees, not a simple ZIP average.

20.4% of adults age 25+ hold a bachelor's degree or higher (3,907 of 19,118 reporting).

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

Stories about Clay County


Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Brazil

All ZIP Codes in Clay County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
47834BrazilStandard18,625$68,578152.3-3.8%
47841Clay CityStandard2,534$71,34659.938.5%
47840CenterpointStandard1,970$102,99153.32.2%
47846CoryStandard1,006$77,22831.1130.7%
47837CarbonStandard997$77,50031.1-26.6%
47833Bowling GreenStandard836$67,67938.2-32.4%
47857KnightsvillePO Box341$60,4170.3-40.4%
47881StauntonPO Box266$51,1460.0-29.6%
47853HarmonyPO Box106$54,5830.023.3%
47845CoalmontPO Box410.6

Adjacent & Nearby Counties