O Brien County (O'Brien County) , Iowa

O Brien County: County in Iowa, United States

About

O'Brien County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 14,398 and a population density of 10 people per km². After 10 years in 2020 county had an estimated population of 13,679 inhabitants. Its county seat is Primghar. The county was created 171 years ago in 1850.

O'Brien County Quick Facts

Population : 13,679 (2020)
Country : United States of America
State : Iowa (United States)
Area : 1485 km2
Water as percent of area : 0.03%
Land as percent of area : 99.97%
Named for : William Smith O'Brien
Altitude : 1,522 feet / 464 meters
Capital : Primghar
Establishment : January 01, 1851
Time Zone : America/Chicago
Local time : 21:50:34 (20th May 2022)
Density : 9 Pop. per km² as of 2020
Population growth : -5.26% (2010-2020)
O'Brien County locator map
Location of O'Brien County on Iowa map.
Indian Village Site Witrock Area image
Indian Village Site Witrock Area
Indian Village Site Witrock Area image

Geography

O'Brien County is located at 43°5'2"N 95°37'30"W (43.0837500, -95.6248800). It has 2 neighbors: Cherokee County and Osceola County.

O Brien County map

The largest city of O'Brien County is Sheldon with a population of 5,071. Other cities include, Hartley population 1,556, Sanborn population 1,390, Paullina population 965 and Primghar population 858. See all O'Brien County cities & populated places.

O'Brien County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in O'Brien County.

City Name Population Title
Sheldon 5,071 City in Iowa, United States
Hartley 1,556 Human settlement in O'Brien County, Iowa, United States of America
Sanborn 1,390 City in Iowa
Paullina 965 City in O'Brien County, Iowa, United States
Primghar 858 City in Iowa
Sutherland 588 City in Iowa
Calumet 155 City in Iowa
Archer 123 City in Iowa, United States

O'Brien County has 2 neighbours.

  • Primghar

Demographics

According to census records, the population of O'Brien County decreased by 5.26% in 10 years.

Year Population % Change Method
2010 14,398 - census
2011 14,218 -1.27% estimation process
2012 14,156 -0.44% estimation process
2013 14,045 -0.79% estimation process
2014 14,042 -0.02% estimation process
2015 13,926 -0.83% estimation process
2016 13,926 0% estimation process
2017 13,774 -1.1% estimation process
2018 13,798 0.17% estimation process
2019 13,753 -0.33% estimation process
2020 13,679 -0.54% estimation process

Comte d'O'Brien, Comté d'O'Brien, O'Brien

People born in O'Brien County (1)

Iowa politician Lester Menke was born in O'Brien County

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