Onawa, IA Profile: Facts, Map & Data


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Onawa, Iowa - Basic Facts

Real Estate Resources

The City of Onawa had a population of 2,929 as of July 1, 2017.

The primary coordinate point for Onawa is located at latitude 42.0268 and longitude -96.0905 in Monona County. The formal boundaries for the City of Onawa (see map below) encompass a land area of 5.19 sq. miles and a water area of 0 sq. miles. Monona County is in the Central time zone (GMT -6). The elevation is 1,050 feet.

The City of Onawa (GNIS ID: 468464) has a C2 Census Class Code which indicates an active incorporated place legally coextensive with a county subdivision but treated as independent of any county subdivision. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Onawa is located within , a minor civil division (MCD) of Monona County.

Beneath the boundary map are tables with Onawa 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

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City of Onawa, IA Boundary Map

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


Total Population 2,929
Daytime Population: Workers 1,597
Daytime Population: Residents 1,636
Total Daytime Population (TDP) 3,233
Ratio TDP/Total Population1 1.10
Population in Households 2,865
Population in Familes 2,122
Population in Group Qrtrs 64
Population Density2 565
Diversity Index3 13


Median Household Income $40,239
Average Household Income $51,137
Per Capita Income $22,929


Total Housing Units 1,506 (100%)
Owner Occupied HU 839 (55.7%)
Renter Occupied HU 461 (30.6%)
Vacant Housing Units 206 (13.7%)
Median Home Value $87,225
Average Home Value $103,129


Total Households 1,300
Average Household Size 2.2
Family Households 719
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 -0.32% -0.24%
Households -0.47% -0.33%
Families -0.69% -0.45%
Median Household Income   3.44%
Per Capita Income   2.67%

Onawa, IA - Peer Comparisons by Rank and Percentile

The table below compares Onawa 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 # 121 88th
Population Density # 594 41st
Diversity Index # 333 67th
Median Household Income # 959 5th
Per Capita Income # 900 11th

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

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