Union, IA Profile: Facts, Map & Data


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Union, Iowa - Basic Facts

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The City of Union had a population of 405 as of July 1, 2017.

The primary coordinate point for Union is located at latitude 42.2435 and longitude -93.0627 in Hardin County. The formal boundaries for the City of Union (see map below) encompass a land area of 0.55 sq. miles and a water area of 0 sq. miles. Hardin County is in the Central time zone (GMT -6). The elevation is 942 feet.

The City of Union (GNIS ID: 2397085) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Union is located within Township of Union, a minor civil division (MCD) of Hardin County.

Beneath the boundary map are tables with Union population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


City of Union, IA Boundary Map

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Boundary Maps: Township of Union | Hardin County | Iowa Counties

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Union, IA Data & Demographics (As of July 1, 2017)


Total Population 405
Daytime Population: Workers 158
Daytime Population: Residents 242
Total Daytime Population (TDP) 400
Ratio TDP/Total Population1 0.99
Population in Households 405
Population in Familes 332
Population in Group Qrtrs 0
Population Density2 737
Diversity Index3 15


Median Household Income $53,643
Average Household Income $57,185
Per Capita Income $23,719


Total Housing Units 200 (100%)
Owner Occupied HU 142 (71.0%)
Renter Occupied HU 33 (16.5%)
Vacant Housing Units 25 (12.5%)
Median Home Value $77,778
Average Home Value $106,944


Total Households 175
Average Household Size 2.31
Family Households 118
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 0.28% 0.2%
Households 0.24% 0.11%
Families 1.62% 0.0%
Median Household Income   1.83%
Per Capita Income   2.91%

Union, IA - Peer Comparisons by Rank and Percentile

The table below compares Union to the other 1,009 incorporated cities, towns and CDPs in Iowa by rank and percentile using July 1, 2017 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 # 525 48th
Population Density # 462 54th
Diversity Index # 263 74th
Median Household Income # 528 48th
Per Capita Income # 851 16th

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

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