Fairfield, IA Profile: Facts, Map & Data


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Fairfield, Iowa - Basic Facts

The City of Fairfield had a population of 9,651 as of July 1, 2015. Fairfield ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Iowa. See peer rankings below.

The primary coordinate point for Fairfield is located at latitude 41.0069 and longitude -91.9671 in Jefferson County. The formal boundaries for the City of Fairfield (see map below) encompass a land area of 6.28 sq. miles and a water area of 0.16 sq. miles. Jefferson County is in the Central time zone (GMT -6). The elevation is 778 feet.

The City of Fairfield (GNIS ID: 467811) has a C2 Census Class Code which indicates an active incorporated place legally coextensive with a county subdivision but treated as independent of any county subdivision. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Fairfield population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2015.

City of Fairfield, IA Boundary Map


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Fairfield, IA Data & Demographics (As of July 1, 2015)


Total Population 9,651
Population in Households 8,985
Population in Familes 6,288
Population in Group Qrtrs 666
Population Density1 1,541
Diversity Index2 28


Total Households 4,353
Average Household Size 2.06
Family Households 2,318
Average Family Size 3


Total Housing Units 4,783 (100%)
Owner Occupied HU 2,564 (53.6%)
Renter Occupied HU 1,789 (37.4%)
Vacant Housing Units 430 ( 9.0%)
Median Home Value $142,188
Average Home Value $186,037


Median Household Income $36,381
Average Household Income $55,178
Per Capita Income $25,243
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.37% 0.29%
Households 0.68% 0.46%
Families 0.84% 0.33%
Median Household Income   3.72%
Per Capita Income   2.76%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

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Fairfield, IA - Peer Comparisons by Rank and Percentile

The table below compares Fairfield to the other 1,009 incorporated cities, towns and CDPs in Iowa by rank and percentile using July 1, 2015 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 43 96th
Population Density1 # 88 91st
Diversity Index2 # 73 93rd
Median Household Income # 985 2nd
Per Capita Income # 582 42nd

Additional comparisons and rankings can be made with a VERY EASY TO USE Iowa Census Data Comparison Tool.