Fairfield, IA ZIP codes

2 ZIP/ZCTAs intersecting this Census place in Jefferson County.

ACS 2023 population

9,438

Median household income

$48,302

Median home value

$152,900

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Fairfield (GEOID 1926445). Methodology

Combined population of ZIP/ZCTAs intersecting this place: 12,201 (2 ZIPs).

Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology

Map of Fairfield, IA

Census place boundary and intersecting ZIP Code Tabulation Areas for Fairfield, IA — Census place boundary for Fairfield, IA. Intersecting ZCTAs may extend past the city limit. Not a USPS city limit. Boundaries: U.S. Census Bureau. Methodology · Data sources

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ZIP/ZCTA overlap with Fairfield

Population overlap

Share of each ZIP/ZCTA’s population located within Fairfield, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

5255675.7%
USPS primary city
52557100.0%
USPS primary city

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting Fairfield

ZIP	City	County	Population	Income
52556	Fairfield	Jefferson County	11,586	$55,528
52557	Fairfield	Jefferson County	615	—