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Where am ILOCATED

Grundy County, Iowa

Grundy County, Iowa, has 12,361 residents (July 2025 estimate). Its county seat is Grundy Center. It uses Central Time and covers 502 sq mi (1,300 km²) of land.

Des MoinesCedar RapidsDavenport
Grundy County in Iowa
Grundy CenterReinbeckDikeConradWellsburg
Grundy County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
12,361
Land area
502 sq mi (1,300 km²)
County seat or government
Grundy Center
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$87,205 ± $4,831
Median home value
$198,800 ± $10,465
Median rent, with utilities
$774 ± $53
Homes lived in by their owners
84.5% ± 1.9 points
County type
County
Metro or micro area
Waterloo-Cedar Falls, IA metro areaOutlying county
Water area
0.04 sq mi (0.09 km²)
State
Iowa
County code (FIPS)
19075
Coordinates (central point)
42.403339, -92.790244
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 Grundy 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. 5061343,867 people
  2. 506383,441 people
  3. 506273,276 people
  4. 506433,027 people
  5. 506652,693 people
  6. 506692,439 people
  7. 506012,299 people
  8. 506241,855 people
  9. 506211,601 people
  10. 506041,590 people
  11. 506601,143 people
  12. 506801,027 people
All 17
  1. 50672611 people
  2. 50642577 people
  3. 50609377 people
  4. 50673250 people
  5. 5065796 people

17 ZIP Code areas overlap Grundy 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

Grundy County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Grundy County, largest first

  1. Palermo Township3,038 people
  2. Black Hawk Township1,962 people
  3. Grant Township1,829 people
  4. Clay Township1,559 people
  5. Shiloh Township954 people
  6. Beaver Township686 people
  7. Colfax Township618 people
  8. Fairfield Township505 people
  9. Washington Township272 people
  10. Pleasant Valley Township261 people
  11. Lincoln Township235 people
  12. Felix Township185 people
All 14
  1. German Township145 people
  2. Melrose Township135 people

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

School districts in Grundy County, largest first

  1. AGWSR Community School District4,351 people
  2. Gladbrook-Reinbeck Community School District4,316 people
  3. Dike-New Hartford Community School District4,270 people
  4. Aplington-Parkersburg Community School District4,086 people
  5. Grundy Center Community School District3,908 people
  6. Eldora-New Providence Community School District3,596 people
  7. BCLUW Community School District3,566 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. Grundy Center, Iowa (city)2,809 people
  2. Reinbeck, Iowa (city)1,715 people
  3. Dike, Iowa (city)1,365 people
  4. Conrad, Iowa (city)1,191 people
  5. Wellsburg, Iowa (city)673 people
  6. Holland, Iowa (city)327 people
  7. Stout, Iowa (city)296 people
  8. Beaman, Iowa (city)125 people
  9. Morrison, Iowa (city)96 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Butler County, Iowa23 mi north
  2. Hardin County, Iowa23 mi west
  3. Black Hawk County, Iowa25 mi east
  4. Tama County, Iowa26 mi southeast
  5. Marshall County, Iowa27 mi south
  6. Franklin County, Iowa34 mi northwest

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.