Decatur, IN Profile: Facts & Data


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Decatur, Indiana - Basic Facts

The City of Decatur had a population of 9,477 as of July 1, 2018. Decatur ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Indiana. See peer rankings below.

The primary coordinate point for Decatur is located at latitude 40.8301 and longitude -84.9282 in Adams County. The formal boundaries for the City of Decatur (see map below) encompass a land area of 5.78 sq. miles and a water area of 0.01 sq. miles. Adams County is in the Eastern time zone (GMT -5). The elevation is 801 feet.

The City of Decatur (GNIS ID: 2394480) 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 Decatur is located within Township of Washington, a minor civil division (MCD) of Adams County.

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  1. Decatur 2018 Demographic Data
  2. Growth Rates for Decatur (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Indiana Research Tools (Easy Tools & Current Data)
  3. Indiana Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Decatur, IN Data & Demographics (As of July 1, 2018)


Total Population 9,477
Population in Households 9,307
Population in Familes 7,257
Population in Group Qrtrs 170
Population Density2 1,640
Diversity Index3 27


Median Household Income $46,269
Average Household Income $57,226
Per Capita Income $24,025


Total Housing Units 4,504 (100%)
Owner Occupied HU 2,662 (59.1%)
Renter Occupied HU 1,406 (31.2%)
Vacant Housing Units 436 ( 9.7%)
Median Home Value $106,682
Average Home Value $127,986


Total Households 4,068
Average Household Size 2.29
Family Households 2,536
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.09% 0.24%
Households 0.17% 0.29%
Families 0.12% 0.12%
Median Household Income   2.81%
Per Capita Income   3.13%

Decatur, IN - Peer Comparisons by Rank and Percentile

The table below compares Decatur to the other 680 incorporated cities, towns and CDPs in Indiana by rank and percentile using July 1, 2018 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 # 85 88th
Population Density # 229 66th
Diversity Index # 116 83rd
Median Household Income # 467 31st
Per Capita Income # 399 41st

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

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