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Jones County, Iowa facts for kids

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Jones County
Jones County Courthouse
Map of Iowa highlighting Jones County
Location within the U.S. state of Iowa
Map of the United States highlighting Iowa
Iowa's location within the U.S.
Country  United States
State  Iowa
Founded December 21, 1837
Named for George Wallace Jones
Seat Anamosa
Largest city Anamosa
 • Total 577 sq mi (1,490 km2)
 • Land 576 sq mi (1,490 km2)
 • Water 1.4 sq mi (4 km2)  0.2%
 • Total 20,646
 • Density 35.78/sq mi (13.815/km2)
Time zone UTC−6 (Central)
 • Summer (DST) UTC−5 (CDT)
Congressional district 1st

Jones County is a county in the U.S. state of Iowa. As of the 2020 census the population was 20,646. The county seat is Anamosa. The county was founded in 1837 and named after George Wallace Jones, a United States Senator and member of Congress.

Jones County is included in the Cedar Rapids Metropolitan Statistical Area.


Iowa harvest 2009
Harvesting corn during the record 2009 season in Jones County.

According to the U.S. Census Bureau, the county has a total area of 577 square miles (1,490 km2), of which 576 square miles (1,490 km2) is land and 1.4 square miles (3.6 km2) (0.2%) is water.

Major highways

  • US 151 (IA).svg U.S. Highway 151
  • Iowa 1.svg Iowa Highway 1
  • Iowa 38.svg Iowa Highway 38
  • Iowa 64.svg Iowa Highway 64
  • Iowa 136.svg Iowa Highway 136


Monticello Regional Airport (MXO) serves the county and surrounding communities.

Adjacent counties


  • Wapsipinicon State Park - Anamosa
  • Central Park
  • Pictured Rocks County Park
  • Wapsipinicon State Park – This 400-acre park includes hiking, climbing, nature study, fishing in the Wapsipinicon River, modern camping, picnicking and golf. The park is covered with vegetation and trees, and hik¬ing reveals a multitude of flowers and wildlife. A road makes a complete circle of the park, winding between the river and bluffs, where the view is great. Included along the drive is a trip through the oldest plant¬ing of white pine in Iowa. There are also several caves such as Horse Thief Cave and Ice Cave. The Wapsi has long been famous for its channel and flathead catfish, as well as spring crappies and bullheads, especially below the dam at the park's entrance. Bass, walleye and northern also inhabit the waters. Of the 30 campsites, 15 have electricity. Running water and hot showers are available for modern camping, and mushroom hunting is allowed. Wapsipinicon Country Club maintains a nine-hole golf course in the park. The park has two lodges – one heated and one for summer use – that are available upon reservation with the park ranger. For more information, call 319-462-2761. For information about golfing, call the Wapsipinicon Country Club at 319-462-3930.
  • Central Park: This 217-acre park is located four miles southeast of Amber off County Roads X44 and E29 and Central Park Road. Campsites and the park’s 25-acre lake are the main draws to Central Park. Campsites range from primitive to full hook-up. Central Parks other amenities include a swimming beach, sand volleyball area, horseshoe pits, playground, boat ramp, hiking trails, rental pavilions, handicapped-accessible fishing pier, picnic areas, rental cabins and a nature center. The Central Park Nature Center is open 1-5 p.m. Saturdays and Sundays, Memorial Day through Labor Day weekend.
  • Pictured Rocks Park – Located south of Monticello off Highway 38, this park offers primitive camping, hiking and access to the Maquoketa River. Picnic shelters, restrooms, playground equipment, and a boat ramp are available.
  • Whitewater Canyon – Known for its beauty, the Whitewater Canyon area totals 562 acres of timber, restored prairie, and riverine habitat. Public hunting and fishing are allowed, and mowed hiking trails provide year-round recreational opportunities. This area is located east of Cascade on Highway 151, and south on Curoe Road.
  • Mon-Maq Dam – Located one mile northeast of Monticello along the Maquoketa River, this river access includes 63 acres of riverine habitat. Known for its fishing holes, the Mon-Maq Dam area provides fishing fun for local anglers. Sandy areas downstream from the dam serve as put-in sites for canoeists and kayakers.


Historical population
Census Pop.
1850 3,007
1860 13,306 342.5%
1870 19,731 48.3%
1880 21,052 6.7%
1890 20,233 −3.9%
1900 21,954 8.5%
1910 19,050 −13.2%
1920 18,607 −2.3%
1930 19,206 3.2%
1940 19,950 3.9%
1950 19,401 −2.8%
1960 20,693 6.7%
1970 19,868 −4.0%
1980 20,401 2.7%
1990 19,444 −4.7%
2000 20,221 4.0%
2010 20,638 2.1%
2020 20,646 0.0%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2018
Population of Jones County from US census data

2020 census

The 2020 census recorded a population of 20,646 in the county, with a population density of 35.8879/sq mi (13.8564/km2). 96.76% of the population reported being of one race. 90.80% were non-Hispanic White, 2.14% were Black, 2.41% were Hispanic, 0.26% were Native American, 0.29% were Asian, 0.01% were Native Hawaiian or Pacific Islander and 4.10% were some other race or more than one race. There were 8,871 housing units, of which 8,113 were occupied.

2010 census

The 2010 census recorded a population of 20,638 in the county, with a population density of 35.8728/sq mi (13.8506/km2). There were 8,911 housing units, of which 8,151 were occupied.



Census-designated places

Other unincorporated communities


  • Cass
  • Castle Grove
  • Clay
  • Fairview
  • Greenfield
  • Hale
  • Jackson
  • Lovell
  • Madison
  • Monticello
  • Oxford
  • Richland
  • Rome
  • Scotch Grove
  • Washington
  • Wayne
  • Wyoming

Population ranking

The population ranking of the following table is based on the 2010 census of Jones County.

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Anamosa City 5,533
2 Monticello City 3,796
3 Cascade (partially in Dubuque County) City 2,159
4 Olin City 698
5 Wyoming City 515
6 Oxford Junction City 496
7 Martelle City 255
8 Onslow City 197
9 Stone City CDP 192
10 Morley City 115
11 Center Junction former City 111

See also

Kids robot.svg In Spanish: Condado de Jones (Iowa) para niños

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