ZIP Codes of Spencer County, IN

Population & People
Population & People
Total Population
21,427
Household Income
Household Income
Median Income
$78,407
Housing
Housing
Total Housing Units
9,507
Business & Economy
Business & Economy
Total Businesses
426
Employment
Employment
Employment Rate
60.00%
Education
Education
Bachelor's Degree+
22.13%
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 (12 Standard, 3 PO Box, 0 Unique) [See All]
Area Codes:812 / 930
Timezone:Central (GMT -06:00)
Local Time:2:12:09 PM
Population:21,427 [See All]
FIPS:18147
Land Area:420 sq mi
Water Area:4 sq mi
Coordinates:38.0624, -86.9718
Quick Link:
https://www.zip-codes.com/county/in-spencer.asp
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Notable income spread
Median income ranges $49,128 to $146,141 across ZIPs — a 3.0× gap.
Striking education divide
Bachelor's share spans 9.8% to 41.3% — a 32-point gap.

Standout ZIPs in this County


Most Populous
Rockport · 5,362 people
25.0% of county total
Highest Income
Lincoln City · $146,141 median
1.9× county average
Largest Land Area
Rockport · 88.8 sq mi
Spans the most ground
Fastest Growth
Dale · 5.5% (10-yr)
3,334 → 3,518 residents
Most Educated
Santa Claus · 41.3% bachelor's+
797 of 1,931 adults 25+

Things worth knowing about Spencer County


21,427 residents live across 15 ZIPs covering 420 sq mi, served by 15 distinct USPS-recognized cities.

Population moved from 21,182 to 21,427 from 2014 to 2024 — a +1.2% change. 6 ZIPs gained residents, 6 lost.

The county's wealthiest ZIP 47552 (Lincoln City, $146,141 median) and poorest ZIP 47537 (Gentryville, $49,128) are 6.5 miles apart — a 3.0× income gap across local geography.

Median home values vary 2.3× across this county — from $116,100 in 47588 (Troy) to $263,900 in 47550 (Lamar).

Density varies 10× across the county — from 23 people/sq mi in 47531 (Evanston) to 241 in 47579 (Santa Claus).

Educational attainment ranges from 9.8% bachelor's+ in 47634 (Richland) to 41.3% in 47579 (Santa Claus) — the breadth of educational profiles across the area.

Within Indiana, this is the #68 most populous of 92 counties and ranks #26 for median household income .

Weighted by population, the typical household earns about $71,755 across the county — reflecting what a typical resident sees, not a simple ZIP average.

22.1% of adults age 25+ hold a bachelor's degree or higher (3,357 of 15,168 reporting).

12 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.

All ZIP Codes in Spencer County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
47635RockportStandard5,362$66,28688.8-7.0%
47523DaleStandard3,518$66,54865.95.5%
47579Santa ClausStandard2,883$87,92612.0-5.6%
47634RichlandStandard2,272$70,78148.3-2.1%
47615GrandviewStandard1,631$66,45839.62.4%
47577Saint MeinradStandard1,298$52,20823.339.9%
47611ChrisneyStandard988$56,87539.7-19.2%
47588TroyStandard921$57,3159.858.2%
47531EvanstonStandard868$140,59537.214.5%
47550LamarStandard791$80,62533.6-2.9%
47537GentryvilleStandard702$49,12819.4-4.5%
47552Lincoln CityStandard193$146,1412.7153.9%
47556Mariah HillPO Box0.0
47536FuldaPO Box0.0
47617HatfieldPO Box0.0

Adjacent & Nearby Counties