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Where am ILOCATED

Cass County, Iowa

Cass County, Iowa, has 12,960 residents (July 2025 estimate). Its county seat is Atlantic. It uses Central Time and covers 564 sq mi (1,461 km²) of land.

Des MoinesCedar RapidsDavenport
Cass County in Iowa
AtlanticGriswoldAnitaLewisMassena
Cass County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
12,960
Land area
564 sq mi (1,461 km²)
County seat or government
Atlantic
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$63,013 ± $3,821
Median home value
$150,300 ± $10,147
Median rent, with utilities
$777 ± $64
Homes lived in by their owners
71.6% ± 3.3 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Omaha, NE-IA metro area and Des Moines-West Des Moines, IA metro area
Water area
0.69 sq mi (1.79 km²)
State
Iowa
County code (FIPS)
19029
Coordinates (central point)
41.333823, -94.933301
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Cass County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 500228,526 people
  2. 515351,697 people
  3. 508641,662 people
  4. 515771,561 people
  5. 500201,197 people
  6. 51544793 people
  7. 50853716 people
  8. 51532644 people
  9. 50843540 people
  10. 50837282 people
  11. 50274234 people
  12. 50042226 people
All 13
  1. 51552169 people

13 ZIP Code areas overlap Cass County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Cass County, largest first

  1. Grove Township7,084 people
  2. Pleasant Township1,059 people
  3. Grant Township1,046 people
  4. Cass Township723 people
  5. Massena Township595 people
  6. Union Township518 people
  7. Washington Township469 people
  8. Pymosa Township435 people
  9. Brighton Township225 people
  10. Bear Grove Township218 people
  11. Noble Township200 people
  12. Franklin Township199 people
All 16
  1. Benton Township119 people
  2. Victoria Township104 people
  3. Lincoln Township58 people
  4. Edna Township44 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Iowa, by county

School districts in Cass County, largest first

  1. Atlantic Community School District8,567 people
  2. AHSTW Community School District5,373 people
  3. Griswold Community School District3,234 people
  4. Exira-Elk Horn-Kimballton Community School District3,107 people
  5. CAM Community School District2,610 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Atlantic, Iowa (city)6,763 people
  2. Griswold, Iowa (city)975 people
  3. Anita, Iowa (city)957 people
  4. Lewis, Iowa (city)461 people
  5. Massena, Iowa (city)383 people
  6. Cumberland, Iowa (city)302 people
  7. Marne, Iowa (city)98 people
  8. Wiota, Iowa (city)78 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Adair County, Iowa24 mi east
  2. Audubon County, Iowa24 mi north
  3. Montgomery County, Iowa25 mi southwest
  4. Adams County, Iowa25 mi southeast
  5. Shelby County, Iowa31 mi northwest
  6. Pottawattamie County, Iowa32 mi west
  7. Guthrie County, Iowa33 mi northeast

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.