Carroll County, Maryland Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 9th-largest in Maryland

The population of Carroll County, Maryland is 174,318 as of the 2023 American Community Survey, making it the 9th-largest county in Maryland. The median household income is $115,876, the median home value is $406,400, and the median age is 41.3.

The population of Carroll County has grown 5.9% since 2010 (167,230 → 177,108), a +0.41% annualized rate.

Carroll County within Maryland · Source: US Census TIGER/Line via us-atlas

174,318

Population

+0.41%

Annual growth

389

People / sq mi

$115,876

Median Income

$406,400

Median Home Value

Carroll County covers 448 sq mi of land at 389.4 people per square mile.

About Carroll County, MD

Carroll County is a county in Maryland with a population of 174,318. It ranks #9 among counties in Maryland by population. The median age is 41.3, older than the national median. The population is 49.7% male and 50.3% female.

The median household income in Carroll County is $115,876, above the US median of $74,580. 3.7% of residents live below the federal poverty level. Home values sit at a median of $406,400, with monthly rent averaging $1,370. The homeownership rate of 83.9% is higher than the national rate of 64.8%.

Educational attainment in Carroll County reflects 39.7% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 15.6% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 34.5 minutes each way.

Carroll County Population History (2010-2024)

The county of Carroll County had a population of 167,230 in 2010 and 177,108 in 2024, a 5.9% growth over 14 years. The peak was 177,108 in 2024. Average annual growth rate: 0.41%.

177,108

Population (2024)

167,230

Population (2010)

177,108

Peak (2024)

0.41%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	167,230	-	-	estimate
2011	167,072	-158	-0.09%	estimate
2012	167,085	+13	+0.01%	estimate
2013	167,264	+179	+0.11%	estimate
2014	167,383	+119	+0.07%	estimate
2015	167,201	-182	-0.11%	estimate
2016	167,189	-12	-0.01%	estimate
2017	167,687	+498	+0.30%	estimate
2018	168,421	+734	+0.44%	estimate
2019	168,774	+353	+0.21%	estimate
2020	172,910	+4,136	+2.45%	estimate
2021	174,282	+1,372	+0.79%	estimate
2022	175,569	+1,287	+0.74%	estimate
2023	176,735	+1,166	+0.66%	estimate
2024	177,108	+373	+0.21%	estimate

Race & Ethnicity

White	87.2%
Black or African American	4.0%
Asian	0.0%
Hispanic or Latino (any race)	0.7%
Two or More Races	0.0%

Age & Sex

41.3

Median Age

50.3%

Female

49.7%

Male

17.5%

Age 65+

Age Distribution

Under 5

5.5%

5–9

6.1%

10–14

6.4%

15–19

6.6%

20–24

5.8%

25–34

11.1%

35–44

12.7%

45–54

13.2%

55–59

7.7%

60–64

7.4%

65–74

10.2%

75–84

5.1%

85+

2.2%

Children (under 15): 18.0% · Seniors (65+): 17.5%

Income & Poverty

Median household income	$115,876+$14,224 vs state
Mean household income	$138,928
Per-capita income	$51,465
Poverty rate	3.7%-2.6% vs state
Unemployment rate	2.1%
Employment-to-population	65.0%

Top Industries by Employment

Professional & business services

24.6%

Finance & real estate

13.9%

Construction

10.1%

Public administration

8.5%

Information

7.1%

Education & health care

6.9%

Manufacturing

5.9%

Arts, entertainment & food

4.8%

The largest employment sector in Carroll County is professional & business services, accounting for 24.6% of workers.

How residents commute

0.4%

Drive alone

0.9%

Carpool

76.1%

Public transit

15.6%

Work from home

34.5 min

Avg commute

Housing

$406,400+$8,700 vs state

Median home value

$1,370

Median rent

83.9%

Homeownership rate

66,167

Total housing units

95.9%

Occupied

4.1%

Vacant

16.1%

Renter-occupied

Social & access

97.2%

With health insurance

95.1%

With broadband internet

27.8%

Foreign-born

7.5%

Veterans (18+)

12.1%

With a disability

93.4%

Speak language other than English at home

Education

94.9%

High School+

39.7%

Bachelor's+

Largest cities in Maryland

Baltimore (577,193)Columbia (105,871)Germantown (90,521)Waldorf (82,541)Silver Spring (82,129)Frederick (80,617)Ellicott City (73,737)Glen Burnie (72,772)Gaithersburg (69,225)Bethesda (67,403)All Maryland cities →

Other counties in Maryland

Montgomery County (1,057,586)Prince George's County (955,584)Baltimore County (849,586)Anne Arundel County (590,936)Baltimore city (577,193)Howard County (333,916)Frederick County (280,341)Harford County (262,509)Charles County (168,710)Washington County (155,033)All Maryland counties →

Part of Maryland

Maryland demographic profile All Maryland data →

Metro areas in Maryland

Washington (6,263,796)Philadelphia (6,241,882)Baltimore (2,839,409)Hagerstown (298,525)Lexington Park (208,163)Salisbury (128,802)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Carroll County, Maryland has a population of 174,318 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 9th-largest county in Maryland. Population density is 389 people per square mile.

The population of Carroll County has grown 5.9% since 2010 (167,230 → 177,108), a +0.41% annualized rate.

The median household income in Carroll County, Maryland is $115,876, with mean (average) household income of $138,928 and per-capita income of $51,465. 3.7% of residents live below the federal poverty level.

In Carroll County, the largest racial and ethnic groups are White (87.2%), Black or African American (4.0%), Hispanic or Latino (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Carroll County, Maryland is 41.3 years. Residents are 50.3% female and 49.7% male.

The median home value in Carroll County is $406,400 and median monthly rent is $1,370. 83.9% of occupied housing units are owner-occupied. The county has 66,167 total housing units, 4.1% of which are vacant.

The largest employment sector in Carroll County, Maryland is professional, scientific, and management services, employing 24.6% of workers. The unemployment rate is 2.1%.

Baltimore is among the largest cities associated with Carroll County, Maryland, with a population of 577,193.