Barnum, IA Profile: Facts, Map & Data


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Barnum, Iowa - Basic Facts

The City of Barnum had a population of 188 as of July 1, 2018.

The primary coordinate point for Barnum is located at latitude 42.5062 and longitude -94.3657 in Webster County. The formal boundaries for the City of Barnum (see map below) encompass a land area of 0.37 sq. miles and a water area of 0 sq. miles. Webster County is in the Central time zone (GMT -6). The elevation is 1,178 feet.

The City of Barnum (GNIS ID: 2394068) 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 Barnum is located within Township of Johnson, a minor civil division (MCD) of Webster County.

Beneath the boundary map are tables with Barnum population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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City of Barnum, IA Boundary Map

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Boundary Maps: Township of Johnson | Webster County | Iowa Counties

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Barnum, IA Data & Demographics (As of July 1, 2018)


Total Population 188
Population in Households 188
Population in Familes 167
Population in Group Qrtrs 0
Population Density2 512
Diversity Index3 11


Median Household Income $75,000
Average Household Income $105,813
Per Capita Income $40,298


Total Housing Units 77 (100%)
Owner Occupied HU 65 (84.4%)
Renter Occupied HU 7 ( 9.1%)
Vacant Housing Units 5 ( 6.5%)
Median Home Value $146,429
Average Home Value $206,641


Total Households 72
Average Household Size 2.61
Family Households 56
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 -0.19% -0.32%
Households -0.17% -0.28%
Families 0.67% 0.0%
Median Household Income   3.95%
Per Capita Income   3.96%

Barnum, IA - Peer Comparisons by Rank and Percentile

The table below compares Barnum to the other 1,009 incorporated cities, towns and CDPs in Iowa 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 # 716 29th
Population Density # 639 37th
Diversity Index # 434 56th
Median Household Income # 92 91st
Per Capita Income # 42 96th

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

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