Fairfield, IA ZIP codes

Fairfield, Iowa has 2 ZIP codes. They are in Jefferson County.

Population in these ZIPs: 12,133
Avg. median income: $59,200population-weighted
Typical home value: $180,100population-weighted

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Fairfield, IA ZIP codes list

Fairfield, IA ZIP codes
ZIP code	County	Population	Median income	Typical home value
52556	Jefferson County	11,448	$59,243	$180,100
52557	Jefferson County	685	—	—

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Fairfield

Libertyville 9 mi
Packwood 9 mi
Lockridge 10 mi
Batavia 10 mi
Birmingham 11 mi
Brighton 11 mi
Richland 12 mi
Stockport 13 mi
Ollie 16 mi
Selma 16 mi
Douds 16 mi
Eldon 16 mi

Frequently asked questions

What is the ZIP code for Fairfield, IA?

Fairfield, IA has 2 ZIP codes: 52556 and 52557.

What county is Fairfield, Iowa in?

Fairfield ZIP codes are in Jefferson County.