Decorah, IA Profile: Facts, Map & Data


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Decorah, Iowa - Basic Facts

The City of Decorah had a population of 7,931 as of July 1, 2017. Decorah 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 Decorah is located at latitude 43.3016 and longitude -91.7848 in Winneshiek County. The formal boundaries for the City of Decorah (see map below) encompass a land area of 7.01 sq. miles and a water area of 0.03 sq. miles. Winneshiek County is in the Central time zone (GMT -6). The elevation is 873 feet.

The City of Decorah (GNIS ID: 2394483) 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 Decorah is located within Township of Decorah, a minor civil division (MCD) of Winneshiek County.

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

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City of Decorah, IA Boundary Map

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Boundary Maps: Township of Decorah | Winneshiek County | Iowa Counties

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


Total Population 7,931
Daytime Population: Workers 8,400
Daytime Population: Residents 3,414
Total Daytime Population (TDP) 11,814
Ratio TDP/Total Population1 1.49
Population in Households 5,891
Population in Familes 4,122
Population in Group Qrtrs 2,040
Population Density2 1,131
Diversity Index3 17


Median Household Income $55,243
Average Household Income $71,158
Per Capita Income $27,885


Total Housing Units 3,156 (100%)
Owner Occupied HU 1,821 (57.7%)
Renter Occupied HU 1,002 (31.7%)
Vacant Housing Units 333 (10.6%)
Median Home Value $178,652
Average Home Value $194,512


Total Households 2,823
Average Household Size 2.09
Family Households 1,501
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 -0.34% -0.25%
Households -0.16% -0.28%
Families -0.24% -0.42%
Median Household Income   2.18%
Per Capita Income   1.88%

Decorah, IA - Peer Comparisons by Rank and Percentile

The table below compares Decorah 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 # 49 95th
Population Density # 230 77th
Diversity Index # 201 80th
Median Household Income # 438 57th
Per Capita Income # 459 55th

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

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