Marion, IA Profile: Facts, Map & Data


Marion Local Links & Resources:
Hotels | Resources | ALL Marion Content

Also See: Marion, IA ZIP Codes & ZIP Code Maps | Local Area Photos

Marion, Iowa - Basic Facts

Real Estate Resources

The City of Marion had a population of 38,156 as of July 1, 2017. Marion 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 Marion is located at latitude 42.0446 and longitude -91.5862 in Linn County. The formal boundaries for the City of Marion (see map below) encompass a land area of 16.05 sq. miles and a water area of 0.01 sq. miles. Linn County is in the Central time zone (GMT -6). The elevation is 846 feet.

The City of Marion (GNIS ID: 2395011) 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 Marion is located within Township of Marion, a minor civil division (MCD) of Linn County.

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

EXTREMELY LOCAL Demographic 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 demographic data.


City of Marion, IA Boundary Map

Also See: BIG Map | Driving Directions | IA Congressional Districts
Boundary Maps: Township of Marion | Linn County | Iowa Counties

Search the map for:

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


Total Population 38,156
Daytime Population: Workers 10,009
Daytime Population: Residents 19,221
Total Daytime Population (TDP) 29,230
Ratio TDP/Total Population1 0.77
Population in Households 37,804
Population in Familes 30,652
Population in Group Qrtrs 352
Population Density2 2,377
Diversity Index3 19


Median Household Income $66,359
Average Household Income $84,453
Per Capita Income $34,001


Total Housing Units 16,121 (100%)
Owner Occupied HU 11,539 (71.6%)
Renter Occupied HU 3,749 (23.3%)
Vacant Housing Units 834 ( 5.2%)
Median Home Value $176,217
Average Home Value $209,449


Total Households 15,287
Average Household Size 2.47
Family Households 10,062
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 1.29% 1.08%
Households 1.11% 0.97%
Families 1.08% 0.9%
Median Household Income   1.77%
Per Capita Income   2.22%

Marion, IA - Peer Comparisons by Rank and Percentile

The table below compares Marion 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 # 14 99th
Population Density # 12 99th
Diversity Index # 171 83rd
Median Household Income # 136 87th
Per Capita Income # 111 89th

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

Iowa Research Tools

Iowa Census Data Comparison Tool

Compare Iowa Census Data
Highest or Lowest: