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Zip Code 52557 — Fairfield, IA

52557 is a ZIP Code associated with Fairfield, IA, located within Jefferson. The postal region supports an estimated population of 685 residents across Data Pending housing units, with a population density of 989.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.020260, -91.966530)

Data MetricLocal Statistic
Postal / Zip Code52557
Primary CityFairfield
State / ProvinceIA
CountyJefferson
Total Population685
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density989.7 people/sq mi
TimezoneAmerica/Chicago

How 52557 Compares

MetricZIP 52557Jefferson CountyIA State Average
Population68516,5293,210,984
Median IncomeData PendingN/AN/A
Population Density989.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 52556Fairfield2.1 mi11,448N/A
Zip 52567Libertyville8.2 mi506N/A
Zip 52580Packwood9.5 mi711N/A
Zip 52533Batavia9.6 mi1,201N/A
Zip 52535Birmingham10.7 mi725N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →