Printable Blank Map of Iowa with Counties
Delineating all 99 counties enclosed between the Mississippi and Missouri rivers, this blank vector map of Iowa captures 56,273 square miles of premier agricultural heartland. Projected in NAD83 Iowa North (EPSG:26975), it provides clean coordinate geometry for Public Land Survey System analysis, Des Moines Lobe glacial soil mapping, and county seat labeling.
About this Blank Map of Iowa
This printable blank map represents Iowa on the authentic NAD83 (2011) / WGS84 ellipsoidal datum. All 6 interactive visual variants—including Blank Outline, Counties Boundaries, Centroid Labels, Capital City Marker (Des Moines), and High-Contrast Printer B&W—are generated synchronously from identical coordinate geometry.
| Specification | Value | Compliance & Source |
|---|---|---|
| Jurisdiction / Entity | Iowa | US State |
| Subdivisions Rendered | 99 Counties | Verified Topological Polygon Mesh |
| Primary Capital City | Des Moines | Marked on the capital variant |
| Cartographic Projection | NAD83 IOWA NORTH | Distortion-Minimized Coordinate Map |
| Reference Datum | NAD83 (2011) / WGS84 | NOAA NGS / EPSG:26975 (State Plane Coordinate System) |
Iowa Counties at a Glance
- Counties
- 99
- Capital
- Des Moines
- Population (2020)
- 3,190,427
- Land area
- 55,857 sq mi
Most populous counties
- Polk County (Des Moines): 492,410 people, 15.4% of the state
- Linn County (Cedar Rapids): 230,296 people, 7.2% of the state
- Scott County (Davenport): 174,671 people, 5.5% of the state
- Johnson County (Iowa City): 152,862 people, 4.8% of the state
- Black Hawk County (Waterloo): 131,143 people, 4.1% of the state
Largest counties by land area
- Kossuth County (Algona): 972.7 sq mi
- Pottawattamie County (Council Bluffs): 951.3 sq mi
- Woodbury County (Sioux City): 872.9 sq mi
- Plymouth County (Le Mars): 862.8 sq mi
- Clayton County (Elkader): 778.5 sq mi
Neighboring states
Figures: US Census Bureau 2020 Census populations and Gazetteer land areas. The full sortable list with seats and FIPS codes is on the Iowa county map & list page.
Geography Notes: Iowa
Iowa North Lambert Conformal Conic Standard
Two standard parallels at 42°04'N and 43°16'N keep scale distortion under 1:10,000 across northern Iowa.
Because Iowa extends east-to-west across 300 miles, Lambert Conformal Conic geometry maintains true angular conformity along county lines and federal township tiers.
Hydrologists and civil engineers managing the Cedar, Iowa, and Des Moines river basins rely on this coordinate framework to align flood mitigation models with official USGS stream gauges.
Conformal conic standard parallels preserve rectangular county outlines between the Mississippi and Missouri rivers.
The Des Moines Lobe vs The Loess Hills
Iowa's 99 counties feature distinctive glacial terrain that established the world's most productive grain agriculture.
The Des Moines Lobe—the most recent glacial advance 12,000 years ago—left flat, poorly drained till plains in north-central Iowa, now transformed by subsurface drainage tiles into elite corn and soybean acreage.
Along the Missouri River in western Iowa (Harrison, Monona, and Woodbury counties), windblown silt deposits formed the dramatic Loess Hills, rising up to 200 feet above the river bottomlands.
Kossuth County is Iowa's largest county at 973 square miles, created by merging historic Bancroft and Kossuth counties in 1857.
Curated Classroom Activities & Spatial Labs for Iowa
Pedagogical lesson plans and spatial analysis activities designed specifically for printable vector maps of Iowa:
Iowa River Boundary & Glacial Soil Exercise
Objective: Trace Iowa's river borders and map the Des Moines Lobe agricultural region.
Materials: Printed blank map of Iowa, blue and green colored pencils, glacial geology atlas.
- Trace the Mississippi River along the eastern border and the Missouri and Big Sioux rivers along the western border.
- Outline the Des Moines Lobe glacial footprint covering north-central Iowa down to Polk County (Des Moines).
- Highlight Kossuth County along the Minnesota border, noting it as the largest county in the state.
Iowa 99-County Grid & County Seat Recall
Objective: Analyze the highly regular rectangular county grid established across the Iowa prairie.
Materials: Printed Iowa county outline map, fine-tip black pen.
- Identify Polk County (Des Moines) as the state capital and primary population center.
- Locate Linn County (Cedar Rapids) and Johnson County (Iowa City) along the Cedar-Iowa river corridor.
- Examine why almost all of Iowa's interior counties are regular 16-township squares (approximately 24 miles by 24 miles).
The 6 Synchronized Variants Explained
We generate 6 synchronized variations of Iowa from the same master vector dataset. Each variant is aligned to identical coordinate geometry:
1. Blank Boundary Outline
The foundational boundary outline of Iowa. Rendered with a clean exterior stroke and zero fill—the optimal version for in-class labeling exams, custom cartographic overlays, or clean graphic design.
2. With Subdivisions (99 Counties)
Displays the exterior boundary plus internal administrative borders for all 99 counties. Each subdivision possesses a unique SVG element ID for direct styling and choropleth shading in vector editors.
3. Labeled with True Centroids
Features authentic typographic labels positioned at each administrative territory's mathematical center of mass. Perfect as a master grading answer key or self-study reference sheet.
4. Adjacent-Contrast Color Fill
Filled using an adjacency-contrast pastel palette so neighboring jurisdictions never blend together. Excellent for tactile visual discrimination and regional geography units.
5. With Capital City (Des Moines)
Pinpoints the official capital city of Des Moines using a high-visibility star marker and typographic callout, positioned at precise geodetic coordinates.
6. High-Contrast Printer B&W
Optimized specifically for monochrome desktop laser and inkjet printers. Uses pure black vector paths (#000000) and ultra-clean white fills to prevent ink-bleeding and toner smudging.
Tools to Use With This Map
- Interactive US county mapZoom into county lines on a live map.
- What county am I in?Find your county from your device location.
- True size comparisonDrag Iowa over other places to compare real areas.
- Map area calculatorDraw a shape and measure its area on the WGS84 ellipsoid.
- Color a mapShade regions online and download your own map.
Iowa County Map & Full List
See 2020 Census populations, seats, land areas and FIPS codes for every county in Iowa, with an on-page map and CSV export.
Need Definitions for Map Projections, SVG Vectors, or Centroids?
Explore our centralized Cartography Glossary for detailed definitions of national and global geodetic datums, equal-area vs. conformal projections, TopoJSON topological arcs, and choropleth classification standards.
Frequently Asked Questions About Iowa Blank Maps
Authoritative answers to common questions regarding printing, licensing, vector customization, and curriculum use:
Why does Iowa have 99 counties instead of 100?▼
Iowa originally planned 100 counties, but in 1857 the state legislature merged sparsely populated Bancroft County into neighboring Kossuth County, leaving 99.
What is the largest county by land area in Iowa?▼
Kossuth County along the northern border with Minnesota is the largest county by area at 973 square miles, nearly double the size of typical Iowa counties.
Are all Iowa county borders straight lines?▼
Most interior county lines are straight lines following the federal Public Land Survey System; only borders along the Mississippi, Missouri, and Des Moines rivers follow natural watercourses.