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Midwest county atlas

Indiana county map

Explore all 92 counties. Select a county to see its map, or download a copy for your next project.

2025 Census boundaries92 mapped unitsCapital: Indianapolis
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Boundary map 100%
Labelled map of Indiana counties Adams CountyAllen CountyBartholomew CountyBenton CountyBlackford CountyBoone CountyBrown CountyCarroll CountyCass CountyClark CountyClay CountyClinton CountyCrawford CountyDaviess CountyDearborn CountyDecatur CountyDeKalb CountyDelaware CountyDubois CountyElkhart CountyFayette CountyFloyd CountyFountain CountyFranklin CountyFulton CountyGibson CountyGrant CountyGreene CountyHamilton CountyHancock CountyHarrison CountyHendricks CountyHenry CountyHoward CountyHuntington CountyJackson CountyJasper CountyJay CountyJefferson CountyJennings CountyJohnson CountyKnox CountyKosciusko CountyLaGrange CountyLake CountyLaPorte CountyLawrence CountyMadison CountyMarion CountyMarshall CountyMartin CountyMiami CountyMonroe CountyMontgomery CountyMorgan CountyNewton CountyNoble CountyOhio CountyOrange CountyOwen CountyParke CountyPerry CountyPike CountyPorter CountyPosey CountyPulaski CountyPutnam CountyRandolph CountyRipley CountyRush CountyScott CountyShelby CountySpencer CountySt. Joseph CountyStarke CountySteuben CountySullivan CountySwitzerland CountyTippecanoe CountyTipton CountyUnion CountyVanderburgh CountyVermillion CountyVigo CountyWabash CountyWarren CountyWarrick CountyWashington CountyWayne CountyWells CountyWhite CountyWhitley County
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2025 U.S. Census boundaries. Zoom to reveal more names. Drag to pan when zoomed; use arrow keys, + and − with the map focused.

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SVG

SVG is editable vector artwork. PNG is a high-resolution image. PDF uses landscape Letter pages, with a separate key when needed.

Downloads contain the complete boundary map, independent of zoom. Crowded names use a numbered key. Numbered quiz maps use the county list / answer key (CSV). Boundary data (GeoJSON) · Reuse with source credit.

Roads, terrain & aerial imagery

Explore Indiana with a county boundary overlay. Choose a view to load the interactive map.

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Street names, terrain, or aerial photography with the county boundary in view.

Backgrounds load from OpenStreetMap or USGS only when selected. Imagery dates and detail vary by location.

Map scope: Use the boundary map for names and shapes, or the interactive background viewer for roads, terrain, and aerial imagery. County boundaries do not identify parcels or ZIP codes.

Indiana county geography overview

Indiana has 92 counties, which places it 12th among the 50 state and District of Columbia maps in this atlas when ordered by number of county-level units. Their combined 35,824.9 square miles of land place the state 38th by mapped land area.

The average county-level area is 389 square miles, while the median is 396 square miles. The median is often the better description of a typical unit because one or two very large areas can pull the average upward. The five largest units together account for about 8% of the state’s mapped land area.

92county-level units
396 sq mimedian land area
657.1 sq milargest unit
2%share of mapped area that is water

Largest and smallest Indiana counties

Allen County is the largest county-level unit by land area at 657.1 square miles. It represents about 2% of all mapped land in Indiana. At the other end of the range, Ohio County has 86.1 square miles of land.

Largest by land area

  1. Allen County657.1 sq mi
  2. LaPorte County598.3 sq mi
  3. Jasper County559.7 sq mi
  4. Greene County542.5 sq mi
  5. Kosciusko County531.4 sq mi

Smallest by land area

  1. Ohio County86.1 sq mi
  2. Floyd County148.5 sq mi
  3. Union County161.2 sq mi
  4. Blackford County165.1 sq mi
  5. Scott County190.4 sq mi

Rankings use land area rather than total area. This avoids making coastal or lake counties appear larger solely because their boundaries include extensive water.

Alphabetical list of Indiana counties

The table is alphabetical, so it works as a name and FIPS-code reference rather than an area ranking. Every identifier begins with the Indiana state FIPS prefix 18. Land and water figures are rounded to one decimal place.

92 county-level areas

Download county data / numbered map key (CSV)
No.NameFIPS codeLand areaWater area
1Adams County18001338.9 sq mi1 sq mi
2Allen County18003657.1 sq mi2.8 sq mi
3Bartholomew County18005406.9 sq mi2.6 sq mi
4Benton County18007406.4 sq mi0.1 sq mi
5Blackford County18009165.1 sq mi0.5 sq mi
6Boone County18011422.9 sq mi0.3 sq mi
7Brown County18013312 sq mi4.6 sq mi
8Carroll County18015372.2 sq mi2.8 sq mi
9Cass County18017412.1 sq mi2.7 sq mi
10Clark County18019372.5 sq mi4.1 sq mi
11Clay County18021357.6 sq mi2.7 sq mi
12Clinton County18023405.1 sq mi0.2 sq mi
13Crawford County18025305.6 sq mi3.2 sq mi
14Daviess County18027429.5 sq mi7.4 sq mi
15Dearborn County18029305.1 sq mi2.3 sq mi
16Decatur County18031372.6 sq mi0.8 sq mi
17DeKalb County18033362.8 sq mi1 sq mi
18Delaware County18035392.1 sq mi3.8 sq mi
19Dubois County18037427.3 sq mi8.1 sq mi
20Elkhart County18039463.2 sq mi4.8 sq mi
21Fayette County18041215 sq mi0.1 sq mi
22Floyd County18043148.5 sq mi1 sq mi
23Fountain County18045395.7 sq mi2.2 sq mi
24Franklin County18047384.4 sq mi6.6 sq mi
25Fulton County18049368.4 sq mi2.9 sq mi
26Gibson County18051487.4 sq mi11.9 sq mi
27Grant County18053414.1 sq mi0.8 sq mi
28Greene County18055542.5 sq mi3.4 sq mi
29Hamilton County18057394.4 sq mi8.1 sq mi
30Hancock County18059306 sq mi1.1 sq mi
31Harrison County18061484.1 sq mi2 sq mi
32Hendricks County18063406.9 sq mi1.9 sq mi
33Henry County18065391.9 sq mi3 sq mi
34Howard County18067293.1 sq mi0.8 sq mi
35Huntington County18069382.6 sq mi5.1 sq mi
36Jackson County18071510 sq mi3.9 sq mi
37Jasper County18073559.7 sq mi1.7 sq mi
38Jay County18075383.9 sq mi0.2 sq mi
39Jefferson County18077360.7 sq mi2.3 sq mi
40Jennings County18079376.6 sq mi1.7 sq mi
41Johnson County18081320.4 sq mi1.4 sq mi
42Knox County18083515.8 sq mi8.1 sq mi
43Kosciusko County18085531.4 sq mi22.9 sq mi
44LaGrange County18087379.6 sq mi7.1 sq mi
45Lake County18089498.9 sq mi127.7 sq mi
46LaPorte County18091598.3 sq mi15 sq mi
47Lawrence County18093449.1 sq mi2.8 sq mi
48Madison County18095451.9 sq mi1 sq mi
49Marion County18097396 sq mi7 sq mi
50Marshall County18099443.6 sq mi6.1 sq mi
51Martin County18101335.8 sq mi4.6 sq mi
52Miami County18103373.8 sq mi3.5 sq mi
53Monroe County18105394.5 sq mi16.8 sq mi
54Montgomery County18107504.6 sq mi0.8 sq mi
55Morgan County18109403.8 sq mi5.6 sq mi
56Newton County18111401.8 sq mi1.7 sq mi
57Noble County18113410.8 sq mi6.6 sq mi
58Ohio County1811586.1 sq mi1.3 sq mi
59Orange County18117398.4 sq mi9.8 sq mi
60Owen County18119385.3 sq mi2.5 sq mi
61Parke County18121444.7 sq mi5.3 sq mi
62Perry County18123381.7 sq mi4.6 sq mi
63Pike County18125334.4 sq mi6.7 sq mi
64Porter County18127418.1 sq mi103.7 sq mi
65Posey County18129409.4 sq mi10.2 sq mi
66Pulaski County18131433.7 sq mi0.9 sq mi
67Putnam County18133480.5 sq mi2.2 sq mi
68Randolph County18135452.4 sq mi0.9 sq mi
69Ripley County18137446.4 sq mi1.6 sq mi
70Rush County18139408.1 sq mi0.3 sq mi
71Scott County18143190.4 sq mi2.3 sq mi
72Shelby County18145411.1 sq mi1.6 sq mi
73Spencer County18147396.9 sq mi4.6 sq mi
74St. Joseph County18141457.8 sq mi3.6 sq mi
75Starke County18149309.1 sq mi3.1 sq mi
76Steuben County18151308.8 sq mi13.7 sq mi
77Sullivan County18153447.2 sq mi6.9 sq mi
78Switzerland County18155220.7 sq mi2.9 sq mi
79Tippecanoe County18157498.9 sq mi4.3 sq mi
80Tipton County18159260.5 sq mi0 sq mi
81Union County18161161.2 sq mi4 sq mi
82Vanderburgh County18163233.4 sq mi3.5 sq mi
83Vermillion County18165256.9 sq mi3 sq mi
84Vigo County18167403.6 sq mi6.8 sq mi
85Wabash County18169412.5 sq mi8.4 sq mi
86Warren County18171364.7 sq mi1.7 sq mi
87Warrick County18173384.6 sq mi6.4 sq mi
88Washington County18175513.7 sq mi2.9 sq mi
89Wayne County18177401.8 sq mi2.6 sq mi
90Wells County18179368.1 sq mi2.2 sq mi
91White County18181505.2 sq mi3.5 sq mi
92Whitley County18183335.6 sq mi2.3 sq mi

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, download a PDF from the controls above. Labelled exports use numbered callouts for crowded areas; numbered quiz maps match the alphabetical county list. SVG files keep the boundary lines sharp at larger paper sizes.

Frequently asked questions

How many counties are in Indiana?

Indiana has 92 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this Indiana county map?

Yes. Choose Download / print and select PDF for a landscape Letter page, PNG for an image, or SVG for editable vector artwork. Because the map is SVG, its boundary lines stay sharp when scaled.

What is the largest county in Indiana?

Allen County is the largest by land area in this dataset at 657.1 square miles. This is an area ranking, not a population ranking.

What is the smallest county in Indiana?

Ohio County is the smallest by land area in this dataset at 86.1 square miles.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:5,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 27, 2026.