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County · code 19037

Chickasaw CountyIowa

Chickasaw County is a county in Iowa with its seat in New Hampton, formed on January 15, 1851. The county was named after the Chickasaw people.

  • Founded1851
  • County seatNew Hampton
  • Named forChickasaw
  • Land area504 sq mi + 1.3 sq mi water
  • Population12,012 2020 Census
  • Parcels mapped10,075 checked 15 October 2026
Open the free map Click any parcel in Chickasaw County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

BremerHowardFloyd New Hampton Census outline · seat marked

Where it is

Chickasaw on the map of Iowa

Iowa has 99 counties and county equivalents, each with its own records office. Shapes with a page are links.

History

Formed in 1851 from Delaware County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Chickasaw County was created from Non-County Area 6 attached to Delaware, though it was not fully organized at that time. In 1853, the county was attached to Fayette for elections, revenue, and judicial purposes while serving as an administrative center for Floyd, Franklin, Howard, Mitchell, and Worth counties. Chickasaw was fully organized on September 12, 1853, and gradually released the other counties as they organized: Floyd in 1854, Mitchell in 1854, Howard and Worth to Floyd in 1855, and Franklin to Hardin in 1855.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1851
    Chickasaw County created Chickasaw created from Non-County Area 6 attached to Delaware; Chickasaw not fully organized, not attached. · Iowa Acts 1850-1851, ch. 9, sec. 33/p. 35
  2. 1853
    Changed Chickasaw attached to Fayette "for election, revenue, and judicial purposes"; Floyd, Franklin, Howard, Mitchell, and Worth attached to Chickasaw for administrative and judicial purposes. · Iowa Acts 1852-1853, ch. 12, secs. 1, 8/pp. 28-29
  3. 1853
    Changed Chickasaw fully organized, detached from Fayette. · Swisher, "Organization of Counties," 574
  4. 1854
    Changed Floyd fully organized, detached from Chickasaw. · Swisher, "Organization of Counties," 575
  5. 1854
    Changed Mitchell fully organized, detached from Chickasaw. · Iowa Acts 1854-1855, ch. 113, sec. 1/p. 176; Swisher, "Organization of Counties," 575
  6. 1855
    Lost territory Chickasaw lost to Howard; Franklin detached from Chickasaw, attached to Hardin "for election, judicial, and revenue purposes." · Iowa Acts 1854-1855, ch. 120, secs. 1-2/pp. 185-186; ch. 142, sec. 1/p. 211
  7. 1855
    Changed Howard and Worth detached from Chickasaw, attached to Floyd "for judicial purposes". · Iowa Acts 1854-1855, ch. 111, sec. 5/p. 175

Land and parcels

What the maps cover in Chickasaw

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Chickasaw by the Census

Population
12,012 2020 Census count
Housing units
5,534 2020 Census count
Land area
504 square miles
Water area
1.3 square miles
People per sq mi
24 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Chickasaw County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

Open Chickasaw County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

Questions

Common questions about Chickasaw County

When was Chickasaw County founded?
Chickasaw County was founded in 1851, formed from Delaware County, and named after Chickasaw.
What is the county seat of Chickasaw County?
The county seat of Chickasaw County is New Hampton.
Is there an online parcel map for Chickasaw County?
Yes. Chickasaw County publishes a parcel map of 10,075 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Chickasaw County's boundary or name changed?
Chickasaw County was created in 1851 from Delaware County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Floyd County, Howard County and Fayette County.
Is my lot in a flood zone?
We do not have flood maps for Chickasaw County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door