• county
  • FIPS 18011
  • Largest town: Zionsville

Boone County, Indiana

Boone County had 78,773 residents in the Census Vintage 2024 estimate, on 422.9 square miles of land. It ranks 23rd of 92 in Indiana by population and 28th by land area.

Population
78,773
#23 of 92 in Indiana · #733 in US
Area
422.9 sq mi
#28 of 92 in Indiana · #2,397 in US
Density
186 / sq mi
#21 of 92 in Indiana · #588 in US
Median household income
$103,970
#2 of 92 in Indiana · #98 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Boone County within Indiana. Pin: Indianapolis.

Measure from here

Tools and pages that start from Boone County

Boone County population, land area and income

Boone County had 78,773 residents in the Census Vintage 2024 estimate, on 422.9 square miles of land. It ranks 23rd of 92 in Indiana by population and 28th by land area. That works out to 186.3 people per square mile, 1.9 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Indiana has 34,874 residents, so Boone County is 2.3 times that size.

Its SAIPE 2023 median household income of $103,970 is in the top tenth among 3,143 counties with an estimate.

National rank among 3,144

Population

78,773

3144th1st

733rd of 3,144 (US)

Land area

423 sq mi

3144th1st

2397th of 3,144 (US)

Density

186.3 / sq mi

3144th1st

588th of 3,144 (US)

Median household income

$103,970

3143rd1st

98th of 3,143 (US)

Rank within Indiana (92)

Population

78,773

92nd1st

23rd of 92 (IN)

Land area

423 sq mi

92nd1st

28th of 92 (IN)

Density

186.3 / sq mi

92nd1st

21st of 92 (IN)

Median household income

$103,970

92nd1st

2nd of 92 (IN)

How Boone County's population changed since 2020

Boone County gained 7,640 residents between the July 2020 and July 2024 estimates, a rise of 10.7%. That ranks 2nd of 92 in Indiana for growth. The median Indiana county changed by +0.8%, and the state as a whole by +2.0%.

Since the April 2020 estimates base, Boone County recorded 3,713 births and 2,714 deaths, a natural change of +999. Net international migration added +374 and net domestic migration, people moving to or from other US counties, came to +6,658. The largest single component was domestic migration, which added 6,658 people.

71.1k202073.1k202174.4k202276.2k202378.8k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
3,713
Deaths
2,714
Net international migration
+374
Net domestic migration
+6,658
Change, July 2023 to July 2024
+2,578

Where Boone County is

The Census internal point of Boone County is at 40.050900, -86.469000. It sits in UTM zone 16N. The map shades Indiana's 92 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Boone County outlined. Dots are towns of 1,000+ people with residents in it.

Vigo County: +0.0%Fayette County: -0.1%Grant County: -0.1%Noble County: +0.7%Clay County: -0.0%Fulton County: -2.3%Henry County: +0.3%Jasper County: +1.5%Carroll County: +2.0%Huntington County: +0.8%Howard County: +0.6%Tipton County: -0.4%Starke County: +0.3%Lawrence County: +0.4%Jennings County: +0.2%Jay County: -1.5%Greene County: +1.3%Blackford County: -2.4%Madison County: +3.1%Parke County: +2.1%DeKalb County: +2.4%Scott County: +1.5%Benton County: +1.7%Wells County: +2.3%Wabash County: -0.5%Union County: -2.8%Marshall County: +0.8%Putnam County: +3.1%Clinton County: -0.8%Hamilton County: +8.8%Hancock County: +10.8%Jackson County: +2.0%Hendricks County: +8.5%Johnson County: +5.1%Decatur County: -0.2%Lake County: +0.8%Newton County: +2.5%Fountain County: +2.1%Crawford County: +0.0%Perry County: +0.9%Martin County: +0.6%Dearborn County: +1.3%Morgan County: +2.8%Monroe County: +0.0%Switzerland County: +2.5%Ohio County: +1.2%Sullivan County: -0.2%Franklin County: +1.5%Adams County: +2.0%Jefferson County: -0.5%Knox County: -1.1%Ripley County: +0.8%Vanderburgh County: +0.0%Gibson County: -0.1%LaGrange County: +1.5%Dubois County: -0.0%Harrison County: +0.8%Randolph County: -0.3%Brown County: +1.1%Shelby County: +1.3%Tippecanoe County: +2.8%Daviess County: +2.2%Delaware County: +1.1%Elkhart County: +0.2%Whitley County: +1.6%Allen County: +3.4%Montgomery County: +1.8%Miami County: -0.8%St. Joseph County: +0.4%Kosciusko County: +0.6%Floyd County: +1.8%Rush County: -0.1%Wayne County: -0.2%Posey County: -0.5%Clark County: +5.0%Orange County: -0.1%Marion County: +0.5%Boone County: +10.7%Porter County: +1.5%Steuben County: +1.2%Vermillion County: +0.8%Cass County: -0.6%Owen County: +2.5%White County: +0.6%Washington County: +0.4%Pulaski County: -0.8%Pike County: -1.1%Warren County: +0.3%Warrick County: +3.7%Spencer County: +1.8%LaPorte County: -0.8%Bartholomew County: +3.1%
Change 2020 to 2024
  1. < -0.2%
  2. < +0.4%
  3. < +1.2%
  4. < +2.1%
  5. ≥ +2.1%
no data

Orange pin: Boone County internal point. Dark pin: Indianapolis.

Internal point

Decimal
40.050900, -86.469000
DMS
40°03'3.24"N 86°28'8.40"W
UTM
16N 545292.4E 4433541.7N
Geohash
dp4eb751q
Plus code
86GM3G2J+9C

Towns in Boone County

4 incorporated places of 1,000+ people have residents in Boone County, 66,761 people together, or 85% of the county. Each figure counts only the part of the town inside Boone County; towns marked "part" extend into another county. The largest is Zionsville with 33,161.

  1. 01Zionsville33,161
  2. 02Lebanon17,608
  3. 03Whitestown14,564
  4. 04Thorntown1,428
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Boone County

The Census 2024 county adjacency file lists 5 neighbors for Boone County. The most populous is Marion County, IN, with 981,628 residents. Distances run between Census internal points in a straight line.

Distance to Indianapolis and the nearest big city

Indianapolis is 25.5 miles SE of Boone County's internal point in a straight line. The nearest place of 100,000 or more is Carmel, IN (population 103,606), 18.0 miles away. The nearest place of 10,000 or more is Lebanon, IN (population 17,608), 1.7 miles away.

Boone County FIPS code

The FIPS code of Boone County is 18011: state code 18 for Indiana plus county code 011. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $103,970.

Questions people ask

What is the population of Boone County, Indiana?

The Census Vintage 2024 estimate for July 1, 2024 is 78,773. That is up 7,640 people (10.7%) from the July 2020 estimate of 71,133.

What is the FIPS code of Boone County?

18011. The first two digits (18) are Indiana; the last three (011) identify the county.

What is the largest town in Boone County?

Zionsville, with 33,161 residents inside Boone County in 2024.

Which counties border Boone County?

5 county-equivalents border it in the Census 2024 adjacency file: Marion County, IN; Hamilton County, IN; Hendricks County, IN; Montgomery County, IN; Clinton County, IN.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.