ZIP Codes of Palo Alto County, IA

Population & People
Population & People
Total Population
9,246
Household Income
Household Income
Median Income
$78,996
Housing
Housing
Total Housing Units
4,772
Business & Economy
Business & Economy
Total Businesses
287
Employment
Employment
Employment Rate
65.94%
Education
Education
Bachelor's Degree+
19.60%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 8 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:8 ZIP Codes (8 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:515 / 712
Timezone:Central (GMT -06:00)
Local Time:11:53:12 PM
Population:9,246 [See All]
FIPS:19147
Land Area:608 sq mi
Water Area:8 sq mi
Coordinates:43.0639, -94.7038
Quick Link:
https://www.zip-codes.com/county/ia-palo-alto.asp
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Iowa's #81 most populous county
9,246 residents across 8 ZIPs — #81 of 99 Iowa counties.

Standout ZIPs in this County


Most Populous
Emmetsburg · 4,207 people
45.5% of county total
Highest Income
Cylinder · $116,429 median
1.5× county average
Largest Land Area
Emmetsburg · 141.2 sq mi
Spans the most ground
Fastest Growth
Graettinger · 24.6% (10-yr)
1,112 → 1,385 residents
Most Educated
Emmetsburg · 16.3% bachelor's+
479 of 2,941 adults 25+

Things worth knowing about Palo Alto County


9,246 residents live across 8 ZIPs covering 608 sq mi, served by 8 distinct USPS-recognized cities.

Population moved from 9,669 to 9,246 from 2014 to 2024 — a -4.4% change. 3 ZIPs gained residents, 5 lost.

The county's wealthiest ZIP 50528 (Cylinder, $116,429 median) and poorest ZIP 50536 (Emmetsburg, $59,261) are 9.1 miles apart — a 2.0× income gap across local geography.

Median home values vary 6.4× across this county — from $29,300 in 50515 (Ayrshire) to $187,500 in 50528 (Cylinder).

Density varies 12× across the county — from 3 people/sq mi in 50527 (Curlew) to 30 in 50536 (Emmetsburg).

Educational attainment ranges from 14.2% bachelor's+ in 51342 (Graettinger) to 38.4% in 50528 (Cylinder) — the breadth of educational profiles across the area.

Within Iowa, this is the #81 most populous of 99 counties and ranks #28 for median household income .

Weighted by population, the typical household earns about $71,598 across the county — reflecting what a typical resident sees, not a simple ZIP average.

19.6% of adults age 25+ hold a bachelor's degree or higher (1,239 of 6,320 reporting).

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

Stories about Palo Alto 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
608
square miles
Avg density
15.2
people per sq mi
Population
9,246
across 8 ZIPs
Emmetsburg
141.2 sq mi
4,207 residents
West Bend
87.5 sq mi
1,341 residents
Ruthven
82.3 sq mi
1,213 residents

All ZIP Codes in Palo Alto County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
50536EmmetsburgStandard4,207$59,261141.2-7.3%
51342GraettingerStandard1,385$84,86673.724.6%
50597West BendStandard1,341$92,00087.51.1%
51358RuthvenStandard1,213$64,58382.35.5%
50562MallardStandard377$72,50062.5-28.9%
50528CylinderStandard366$116,42982.2-21.6%
50515AyrshireStandard251$63,33337.4-9.4%
50527CurlewStandard10641.5-60.2%

Adjacent & Nearby Counties