Delaware County, Iowa

Delaware County: County in Iowa, United States

About

Delaware County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 17,764 and a population density of 12 people per km². After 10 years in 2020 county had an estimated population of 16,937 inhabitants. Its county seat is Manchester. The county was created 188 years ago in 1836.

Delaware County locator map
Location of Delaware County on Iowa map.

Quick Facts about Delaware County

Population : 16,937 (2020)
Country : United States of America
State : Iowa (United States)
Different from : Delaware County, Delaware County, Delaware County, Delaware County, Delaware County
Area : 1500 km2
Water as percent of area : 0.2%
Land as percent of area : 99.8%
Named for : Delaware
Capital : Manchester
Establishment : January 01, 1837
Time Zone : America/Chicago
Local time : 10:43:37 (22nd February 2025)
Density : 11 Pop. per km² as of 2020
Population growth : -4.88% (2010-2020)
Delaware County Courthouse image
Delaware County Courthouse
Delaware County Courthouse image
Delaware County Courthouse image

Geography

Delaware County is located at 42°28'16"N 91°22'2"W (42.4712100, -91.3673500). It has 2 neighbors: Clayton County and Dubuque County.

Delaware County map

Click "full screen" full screen map icon to open full mode. View satellite images

The largest city of Delaware County is Manchester with a population of 5,004. Other cities include, Edgewood population 854, Earlville population 761, Hopkinton population 609 and Delhi population 470. See all Delaware County cities & populated places.

Delaware County Populated Places

Cities, towns, neighborhoods & other populated places in Delaware County.

City Name Population Title
Manchester 5,004 City in Delaware County, Iowa, United States
Edgewood 854 City in Clayton and Delaware counties in the U.
Earlville 761 Human settlement in Delaware County, Iowa, United States of America
Hopkinton 609 City in Iowa
Delhi 470 City in Delaware County, Iowa
Colesburg 371 Human settlement in Delaware County, Iowa, United States of America
Holy Cross 370 Human settlement in Dubuque County, Iowa, United States of America
Ryan 343 City in Delaware County, Iowa, USA
Greeley 240 Human settlement in Delaware County, Iowa, United States of America
Dundee 158 City in Iowa, United States
Delaware 149 City in Ohio, United States; county seat of Delaware County
Masonville 119 Human settlement in Delaware County, Iowa, United States of America

Delaware County has 2 neighbours.

  • Manchester

Demographics

According to census records, the population of Delaware County decreased by 4.88% in 10 years.

Year Population % Change Method
2010 17,764 - census
2011 17,632 -0.75% estimation process
2012 17,567 -0.37% estimation process
2013 17,473 -0.54% estimation process
2014 17,395 -0.45% estimation process
2015 17,393 -0.01% estimation process
2016 17,288 -0.61% estimation process
2017 17,143 -0.85% estimation process
2018 17,081 -0.36% estimation process
2019 17,011 -0.41% estimation process
2020 16,937 -0.44% estimation process

Comitatul Delaware, Comte de Delaware, Comté de Delaware, Condado de Delaware, Condado han Delaware, Contea di Delaware, Delaueur, Delavehr, Delaver, Delaver srjan, Delaware, Delaware Kun, Delaware Kūn, Delaware konderria, Delaware megye, Hrabstwo Delaware, Kantono Delaware, Okrug Delaver, Quan Delaware, Quận Delaware, dela'oyyara ka'unti, derau~ea jun, mqatʿt dylawyr, shhrstan dlawyr aywwa, te la hua xian, Делавер, Делавэр, Делауеър, Округ Делавер, Դելավեր շրջան, شهرستان دلاویر، آیووا, مقاطعة ديلاوير, ڈیلاویئر کاؤنٹی، آئیووا, ডেলাওয়্যার কাউন্টি, デラウェア郡, 特拉華縣

People born in Delaware County (2)

People born in Delaware County, including politician Charlotte Fawcett, judge Isaac N. Sullivan, .

List

Other places with the same name (6)

Iowa Other Counties (more counties)

County Name Population Title
Indiana 820,445 A city located in the state of Iowa.
Polk County 494,281 County in Iowa, United States
Linn County 227,854 County in Oregon, United States
Des Moines 212,312 The capital of Iowa.
Scott County 173,216 County in Tennessee, United States
Johnson County 153,740 County in Iowa, United States
Cedar Rapids 134,027 The second most populous city in Iowa.
Black Hawk County 130,786 County in Iowa, United States
Woodbury County 103,138 County in Iowa, United States of America
Davenport 101,799 The most populous city in Scott County, Iowa.
Story County 98,237 County in Iowa, United States
Dubuque County 97,590 County in Iowa, United States
Dallas County 96,963 County in Iowa, United States
Pottawattamie County 93,328 County in Iowa, United States of America
Sioux City 82,651 The second most populous city in Iowa.
Iowa City 75,130 The most populous city in Johnson County, Iowa.