Red Oak, IA Profile: Facts & Data


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Red Oak, Iowa - Basic Facts

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The City of Red Oak had a population of 5,406 as of July 1, 2021. Red Oak 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 Red Oak is located at latitude 41.0097 and longitude -95.2255 in Montgomery County. The formal boundaries for the City of Red Oak encompass a land area of 3.95 sq. miles and a water area of 0.06 sq. miles. Montgomery County is in the Central time zone (GMT -6). The elevation is 1,050 feet.

The City of Red Oak 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 Red Oak is located within Township of Red Oak, a minor civil division (MCD) of Montgomery County.

Alternate Unofficial Names for Red Oak: Red Oak Junction.

Jump to... (On This Page!)
  1. Red Oak 2021 Demographic Data
  2. Growth Rates for Red Oak (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 - 2021 Demographics

Red Oak, IA Data & Demographics (As of July 1, 2021)


Total Population 5,406 (100%)
Population in Households 5,295 (97.9%)
Population in Families 3,978 (73.6%)
Population in Group Quarters1 111 ( 2.1%)
Population Density 1,370
Diversity Index2 22


Median Household Income $45,990
Average Household Income $56,867
% of Income for Mortgage4 8%
Per Capita Income $24,666
Wealth Index5 49


Total HU (Housing Units) 2,835 (100%)
Owner Occupied HU 1,485 (52.4%)
Renter Occupied HU 876 (30.9%)
Vacant Housing Units 474 (16.7%)
Median Home Value $87,780
Average Home Value $110,128
Housing Affordability Index3 253


Total Households 2,361
Average Household Size 2.24
Family Households 1,388
Average Family Size 3
  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.


2010-2021 2021-2026
Population -0.53% -0.68%
Households -0.44% -0.63%
Families -0.54% -0.79%
Median Household Income   0.62%
Per Capita Income   1.19%
Owner Occupied HU   -0.16%

Red Oak, IA - Peer Comparisons by Rank and Percentile

The table below compares Red Oak to the other 1,008 incorporated cities, towns and CDPs in Iowa by rank and percentile using July 1, 2021 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 # 71 93rd
Population Density # 132 87th
Median Household Income # 940 7th
Housing Affordability Index # 659 65th
Per Capita Income # 912 10th
Diversity Index # 171 83rd

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

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