ZIP Codes of Montgomery County, IA

Population & People
Population & People
Total Population
10,330
Household Income
Household Income
Median Income
$69,287
Housing
Housing
Total Housing Units
5,055
Business & Economy
Business & Economy
Total Businesses
289
Employment
Employment
Employment Rate
56.31%
Education
Education
Bachelor's Degree+
20.73%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:6 ZIP Codes (4 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:712
Timezone:Central (GMT -06:00)
Local Time:11:53:11 PM
Population:10,330 [See All]
FIPS:19137
Land Area:445 sq mi
Water Area:1 sq mi
Coordinates:41.0505, -95.1046
Quick Link:
https://www.zip-codes.com/county/ia-montgomery.asp
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Iowa's #72 most populous county
10,330 residents across 6 ZIPs — #72 of 99 Iowa counties.

Standout ZIPs in this County


Most Populous
Red Oak · 7,010 people
67.9% of county total
Highest Income
Stanton · $86,438 median
1.2× county average
Largest Land Area
Red Oak · 180.3 sq mi
Spans the most ground
Fastest Growth
Red Oak · 2.6% (10-yr)
6,831 → 7,010 residents
Most Educated
Red Oak · 20.9% bachelor's+
1,012 of 4,846 adults 25+

Things worth knowing about Montgomery County


10,330 residents live across 6 ZIPs covering 445 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 10,661 to 10,330 from 2014 to 2024 — a -3.1% change. 1 ZIPs gained residents, 3 lost (and 1 held flat).

The county's wealthiest ZIP 51573 (Stanton, $86,438 median) and poorest ZIP 51566 (Red Oak, $56,637) are 8.6 miles apart — a 1.5× income gap across local geography.

Median home values vary 1.4× across this county — from $99,400 in 51532 (Elliott) to $134,200 in 51566 (Red Oak).

Density varies across the county — from 10 people/sq mi in 51532 (Elliott) to 39 in 51566 (Red Oak).

Educational attainment ranges from 15.8% bachelor's+ in 51532 (Elliott) to 26.8% in 51573 (Stanton) — the breadth of educational profiles across the area.

Within Iowa, this is the #72 most populous of 99 counties and ranks #72 for median household income .

Weighted by population, the typical household earns about $62,173 across the county — reflecting what a typical resident sees, not a simple ZIP average.

20.7% of adults age 25+ hold a bachelor's degree or higher (1,520 of 7,332 reporting).

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

Stories about Montgomery 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.

Red Oak

All ZIP Codes in Montgomery County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
51566Red OakStandard7,010$56,637180.32.6%
50864VilliscaStandard1,662$69,861140.9-16.2%
51573StantonStandard979$86,43859.3-15.6%
51532ElliottStandard644$65,37563.60.0%
50847GrantPO Box35$68,1250.5-18.6%
51591Red OakPO Box0.0

Adjacent & Nearby Counties