US > Iowa > Hardin County > Union, IA

Union, IA Profile: Facts & Data

Advertisement

Union Local Links & Resources:
Resources | ALL Union Content
Planning to visit Union? See Local Hotels

Also See Union, IA: ZIP Codes & Maps

Union, Iowa - Basic Facts

The City of Union had a population of 375 as of July 1, 2025.

The primary coordinate point for Union is located at latitude 42.2455 and longitude -93.0646 in Hardin County. The formal boundaries for the City of Union 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 City of Union 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.


Jump to... (On This Page!)
  1. Union 2025 Demographic Data
  2. Growth Rates for Union (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Iowa Research Tools (Easy Tools & Current Data)
  3. Iowa Data Comparison Tool - 2025 Demographics
Advertisement

Union, IA Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 375 (100%)
Population in Households 375 (100.0%)
Population in Families 314 (83.7%)
Population in Group Quarters1 0
Population Density 657
Diversity Index2 18
 
 

INCOME

Median Household Income $68,141
Average Household Income $83,802
% of Income for Mortgage4 10%
Per Capita Income $35,755
Wealth Index5 67
Socioeconomic Status Index6 Moderate (51.5)
 

HOUSING

Total HU (Housing Units) 186 (100%)
Owner Occupied HU 132 (71.0%)
Renter Occupied HU 28 (15.1%)
Vacant Housing Units 26 (14.0%)
Median Home Value $110,714
Average Home Value $199,792
Housing Affordability Index3 199
 

HOUSEHOLDS

Total Households 160
Average Household Size 2.34
Family Households 109
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

 2020-2025 2025-2030
Population -1.17% -0.54%
Households 0.00% -0.63%
Families   -0.18%
Median Household Income   2.45%
Per Capita Income   2.07%
Owner Occupied HU   -0.93%

Union, IA - Peer Comparisons by Rank and Percentile

The table below compares Union to the other 1,026 incorporated cities, towns and CDPs in Iowa by rank and percentile using July 1, 2025 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 # 515 50th
Population Density # 487 53rd
Median Household Income # 688 33rd
Housing Affordability Index # 965 94th
Per Capita Income # 745 27th
Diversity Index # 459 56th

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

Union, IA - Most Popular Things to Do

Also See: Nearby Hotels | Driving Directions

Use HTL Address Research for a Iowa Address and get...

Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2025, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Quick & Easy Ways to...

  1. Get Current Demographic Data for Cities, Towns, and ZIP Codes
  2. View Boundary Maps, for Cities, Towns, and ZIP Codes
  3. Locate Physical, Cultural, and Historical Features

Iowa Census Data Comparison Tool

Compare Iowa July 1, 2025 Data
Data:
Locations:
Highest or Lowest:
Results:
View ALL Union Content


Hardin County


Advertisement


Advertisement
Advertisement

Home | About HTL | Advertise Here | References | Legal | Privacy | Contact
Copyright © 2025 HTL, Inc. All Rights Reserved.
Website Development and Marketing by Blue Tangerine