• county
  • FIPS 21015
  • Largest town: Florence

Boone County, Kentucky

Boone County had 144,135 residents in the Census Vintage 2024 estimate, on 246.3 square miles of land. It ranks 5th of 120 in Kentucky by population and 87th by land area.

Population
144,135
#5 of 120 in Kentucky · #474 in US
Area
246.3 sq mi
#87 of 120 in Kentucky · #2,921 in US
Density
585 / sq mi
#5 of 120 in Kentucky · #247 in US
Median household income
$89,313
#3 of 120 in Kentucky · #258 in US

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

Boone County within Kentucky. Pin: Frankfort.

Measure from here

Tools and pages that start from Boone County

Boone County population, land area and income

Boone County had 144,135 residents in the Census Vintage 2024 estimate, on 246.3 square miles of land. It ranks 5th of 120 in Kentucky by population and 87th by land area. That works out to 585.3 people per square mile, 6.1 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Kentucky has 19,740 residents, so Boone County is 7.3 times that size.

Its SAIPE 2023 median household income of $89,313 is in the top tenth among 3,143 counties with an estimate.

National rank among 3,144

Population

144,135

3144th1st

474th of 3,144 (US)

Land area

246 sq mi

3144th1st

2921st of 3,144 (US)

Density

585.3 / sq mi

3144th1st

247th of 3,144 (US)

Median household income

$89,313

3143rd1st

258th of 3,143 (US)

Rank within Kentucky (120)

Population

144,135

120th1st

5th of 120 (KY)

Land area

246 sq mi

120th1st

87th of 120 (KY)

Density

585.3 / sq mi

120th1st

5th of 120 (KY)

Median household income

$89,313

120th1st

3rd of 120 (KY)

How Boone County's population changed since 2020

Boone County gained 7,659 residents between the July 2020 and July 2024 estimates, a rise of 5.6%. That ranks 9th of 120 in Kentucky for growth. The median Kentucky county changed by +1.4%, and the state as a whole by +1.8%.

Since the April 2020 estimates base, Boone County recorded 7,228 births and 4,827 deaths, a natural change of +2,401. Net international migration added +3,119 and net domestic migration, people moving to or from other US counties, came to +2,587. The largest single component was international migration, which added 3,119 people.

136.5k2020137.7k2021139.4k2022141.5k2023144.1k2024
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
7,228
Deaths
4,827
Net international migration
+3,119
Net domestic migration
+2,587
Change, July 2023 to July 2024
+2,624

Where Boone County is

The Census internal point of Boone County is at 38.958900, -84.736400. It sits in UTM zone 16N. The map shades Kentucky's 120 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.

Adair County: +1.9%Kenton County: +3.3%Owen County: +1.2%Morgan County: +4.1%Bracken County: +1.1%Edmonson County: +4.0%Trigg County: +3.4%Jackson County: +3.0%Spencer County: +6.8%Clark County: +1.7%Jessamine County: +6.6%Green County: +3.8%Henry County: +3.2%Graves County: +0.8%Webster County: -1.3%Washington County: +1.9%Ohio County: +0.8%Knott County: -5.1%Meade County: +1.4%Carroll County: +2.5%Scott County: +7.2%Lincoln County: +2.7%Greenup County: -1.7%Boyle County: +2.1%Hardin County: +1.8%Nelson County: +4.1%Hart County: +3.2%Christian County: -2.4%Carlisle County: -0.6%Crittenden County: -0.2%Elliott County: -1.0%Garrard County: +6.3%Larue County: +1.7%Lee County: -0.7%Leslie County: -7.1%Hancock County: -1.0%Lewis County: -1.6%Lyon County: +4.6%McLean County: -0.1%Magoffin County: -4.2%Martin County: -4.9%Mason County: -1.1%Rockcastle County: +1.0%Menifee County: +3.2%Russell County: +2.6%Whitley County: +1.5%Todd County: +3.9%Union County: -3.5%Wolfe County: -2.9%Bell County: -3.9%Boyd County: -0.9%Butler County: +1.9%Metcalfe County: +2.7%Grant County: +2.8%Simpson County: +3.7%Pike County: -5.2%Gallatin County: +1.5%Harlan County: -6.4%Fayette County: +2.1%Logan County: +3.5%Muhlenberg County: -1.2%Bath County: +1.8%Mercer County: +3.8%Barren County: +2.5%Franklin County: +1.6%Bullitt County: +4.2%Boone County: +5.6%Campbell County: +0.9%Jefferson County: +1.4%Wayne County: +0.4%Ballard County: -1.1%Anderson County: +4.1%Pulaski County: +2.7%Knox County: -1.7%Laurel County: +1.0%Breckinridge County: +3.8%Oldham County: +4.2%Letcher County: -6.2%Lawrence County: -3.1%McCracken County: -0.6%Nicholas County: +3.7%Owsley County: -2.6%Powell County: -1.3%Bourbon County: +0.2%Calloway County: +3.7%Henderson County: -1.1%Clinton County: -0.5%Warren County: +9.6%Montgomery County: +2.4%Floyd County: -3.5%Woodford County: +3.1%Hopkins County: -0.3%Johnson County: -2.4%Marshall County: +0.1%Estill County: -1.1%Cumberland County: +3.2%Fleming County: +3.3%Madison County: +7.1%Carter County: -1.9%Allen County: +7.1%Daviess County: +1.0%Harrison County: +4.3%Perry County: -5.7%Fulton County: -3.5%Clay County: -3.5%Robertson County: +9.1%Trimble County: +1.5%Taylor County: +3.1%Shelby County: +3.9%McCreary County: -0.2%Breathitt County: -6.5%Livingston County: -0.6%Hickman County: -3.0%Rowan County: -0.2%Casey County: +0.2%Monroe County: -1.4%Marion County: +1.3%Grayson County: +2.3%Caldwell County: -0.2%Pendleton County: +1.3%
Change 2020 to 2024
  1. < -1.6%
  2. < +0.2%
  3. < +1.9%
  4. < +3.7%
  5. ≥ +3.7%
no data

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

Internal point

Decimal
38.958900, -84.736400
DMS
38°57'32.04"N 84°44'11.04"W
UTM
16N 696133.2E 4314652.4N
Geohash
dngtxu2b4
Plus code
86CQX757+HC

Towns in Boone County

3 incorporated places of 1,000+ people have residents in Boone County, 47,079 people together, or 33% 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 Florence with 33,763.

  1. 01Florence33,763
  2. 02Union7,874
  3. 03Walton (part)5,442
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Boone County

The Census 2024 county adjacency file lists 7 neighbors for Boone County, including 4 across a state line. The most populous is Hamilton County, OH, with 837,359 residents. Distances run between Census internal points in a straight line.

Distance to Frankfort and the nearest big city

Frankfort is 53.9 miles S of Boone County's internal point in a straight line. The nearest place of 100,000 or more is Cincinnati, OH (population 314,915), 17.6 miles away. The nearest place of 10,000 or more is Florence, KY (population 33,763), 5.3 miles away.

Boone County FIPS code

The FIPS code of Boone County is 21015: state code 21 for Kentucky plus county code 015. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $89,313.

Questions people ask

What is the population of Boone County, Kentucky?

The Census Vintage 2024 estimate for July 1, 2024 is 144,135. That is up 7,659 people (5.6%) from the July 2020 estimate of 136,476.

What is the FIPS code of Boone County?

21015. The first two digits (21) are Kentucky; the last three (015) identify the county.

What is the largest town in Boone County?

Florence, with 33,763 residents inside Boone County in 2024.

Which counties border Boone County?

7 county-equivalents border it in the Census 2024 adjacency file: Hamilton County, OH; Kenton County, KY; Dearborn County, IN; Grant County, KY; Switzerland County, IN; Gallatin County, KY; Ohio 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.