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COUNTY

Carroll County

Maryland · 176,677 residents (2025 est.) · 448 sq mi
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Part of the Baltimore metro area
The short version

With 175,321 people, Carroll County is a county in Maryland. 84% of homes are owner-occupied. Few US counties rank higher on income. Median household income runs $118,211, well clear of the $82,259 US median. The foreign-born share is 5%. Poverty is uncommon here, at 5.2% of residents.

At a glance
Wealthier
median household income $118,211, above the US median
US median: $82,259
Older
median age 41.3
US median: 38.9
More educated
41% hold a bachelor's degree
US average: 36%
Less affordable
home values up 46%, inflation adjusted
US median home: $376,019
Unique to this place

What stands out about Carroll County

What changed most since 1990

  • Adults with a bachelor's degree19.6% → 40.7% (+21.1 pts)US over the same years: +15.3 pts
  • White share96.7% → 84.5% (−12.2 pts)US over the same years: −17.8 pts
  • Hispanic share0.5% → 5.1% (+4.6 pts)US over the same years: +9.9 pts

Among the 24 counties in Maryland

  • 8th in household income$118,211
  • 7th in share with a bachelor's degree40.7%
  • 7th in home value$434,000
  • 22nd in diversity score35.0
Section 01

Population & growth

Total population
175,321
+16%since 2000
from 150,897 in 2000
176,677 in 2025 (Census Bureau estimate)
1990 – 2025
Population density
392 / sq mi
+16%since 2000
from 337 / sq mi in 2000
US average: 281
Median age
41.3
+12%since 2000
from 36.9 in 2000
US average: 38.9
Land area
448 sq mi
Population, 1990 – 2024
118K134K149K165K181K19902000201020202024Carroll County
2024175K
1990201020202024
Age distribution, 2024
Under 55.4%(9,530)
US avg: 5.6%
5 to 96.1%(10,635)
US avg: 6%
10 to 146.5%(11,372)
US avg: 6.4%
15 to 196.4%(11,300)
US avg: 6.6%
20 to 245.8%(10,157)
US avg: 6.5%
25 to 3411.2%(19,562)
US avg: 13.7%
35 to 4413%(22,754)
US avg: 13.2%
45 to 5412.7%(22,339)
US avg: 12.2%
55 to 6415%(26,219)
US avg: 12.7%
65 to 7410.4%(18,214)
US avg: 10.2%
75 to 845.3%(9,364)
US avg: 5.1%
85 and over2.2%(3,875)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$118,211
+8%inflation adjusted, since 2000
from $60,021 in 2000
US average: $82,259
1990 – 2024
Per capita income
$53,124
+123%since 2000
from $23,829 in 2000
US average: $44,673
Households earning $100K+
70.0%
+15.6 ptssince 2009
from 54.4% in 2009
US average: 53.3%
Poverty rate
5.2%
+1.4 ptssince 2000
from 3.8% in 2000
US average: 12.5%
Income inequality (Gini)
0.403
+4%since 2010
from 0.386 in 2010
US average: 0.476
Workforce by industry, 2024
Wholesale trade9.9%
US avg: 6.9%
Information9.4%
US avg: 10.8%
Other services6.9%
US avg: 6.7%
Retail trade6.3%
US avg: 9.9%
Public administration5.3%
US avg: 4.8%
Finance & insurance3.7%
US avg: 5.9%
Professional, scientific, technical2.8%
US avg: 5.1%
Transportation & warehousing2%
US avg: 2.2%
Arts, entertainment, food1.6%
US avg: 1.9%
Agriculture, forestry, fishing1.2%
US avg: 1.6%
Construction1%
US avg: 1.2%
Education & health services1%
US avg: 0.9%
Manufacturing0.2%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$434,000
+46%inflation adjusted, since 2000
from $163,300 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,427
+23%inflation adjusted, since 2000
from $638 in 2000
US average: $1,442
Owner-occupied
84.3%
+2.4 ptssince 2000
from 82.0% in 2000
15.7% rent
Vacancy rate
3.7%
Unchangedsince 2009
from 3.7% in 2009
US average: 10.0%
Persons per household
2.66 people
−4%since 2009
from 2.77 people in 2009
US average: 2.54
Owner cost-burdened
19.4%
−8.7 ptssince 2009
from 28.1% in 2009
US average: 22.9%
Renter cost-burdened
45.7%
+0.4 ptssince 2009
from 45.4% in 2009
US average: 47.4%
Afford Score
3.7
−16%since 2009
from 4.4 in 2009
1990 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Gentrification Score
39
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04

Race & ethnicity

2000
White, non-Hispanic95.1%(143,455)
Black2.3%(3,400)
Hispanic / Latino1%(1,489)
Asian0.7%(1,124)
Other0%
2024
White, non-Hispanic84.5%(148,104)
Black4%(7,035)
Hispanic / Latino5.1%(8,923)
Asian2.4%(4,195)
Other4%(7,064)
Diversity Score
35
+75%since 2009
from 20 in 2009
1990 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Segregation Score
20
−3%since 2020
from 20 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican1.3%(2,242)
Central American1.2%(2,190)
Puerto Rican0.7%(1,211)
Salvadoran0.6%(1,101)
Guatemalan0.3%(478)
Cuban0.3%(441)
Peruvian0.3%(441)
Panamanian0.2%(313)
Dominican0.2%(299)
Argentine0.2%(298)
Spaniard0.2%(284)
+ 8 more hispanic origin groups with data
Ecuadorian0.2%(275)
Honduran0.2%(271)
Colombian0.1%(234)
Bolivian0.1%(229)
Chilean0.1%(164)
Asian origin
Asian Indian0.5%(866)
Filipino0.5%(834)
Korean0.3%(607)
Chinese0.3%(598)
Pakistani0.3%(508)
Vietnamese0.1%(161)
Bangladeshi0.1%(160)
Burmese0.1%(119)
Thai0%(65)
Japanese0%(51)
Taiwanese0%(11)
+ 4 more asian origin groups with data
Pacific Islander origin
Tongan0%(25)
Samoan0%(3)
Ancestry
German23.1%(40,468)
Irish17.6%(30,819)
English13.8%(24,220)
American11.5%(20,114)
Italian7.2%(12,705)
Polish3.9%(6,799)
Scottish2.1%(3,758)
French1.4%(2,518)
Dutch0.8%(1,396)
Scotch-Irish0.8%(1,358)
Russian0.7%(1,225)
+ 46 more ancestry groups with data
Welsh0.7%(1,188)
Swedish0.5%(949)
Norwegian0.5%(908)
Ukrainian0.5%(853)
Greek0.5%(819)
West Indian0.4%(677)
Lithuanian0.4%(650)
Hungarian0.4%(637)
British0.3%(581)
Czech0.3%(552)
Arab0.2%(434)
Jamaican0.2%(427)
Danish0.2%(378)
Slovak0.2%(376)
Portuguese0.2%(374)
Nigerian0.2%(325)
Romanian0.2%(304)
Swiss0.2%(289)
Austrian0.1%(251)
Lebanese0.1%(236)
Haitian0.1%(209)
Finnish0.1%(170)
Brazilian0.1%(157)
Israeli0.1%(150)
Croatian0.1%(105)
Cape Verdean0.1%(96)
Bulgarian0.1%(95)
Canadian0.1%(92)
Kenyan0.1%(90)
Ghanaian0.1%(89)
Slovene0%(84)
Turkish0%(78)
Syrian0%(56)
Iranian0%(56)
Armenian0%(51)
Belgian0%(46)
Moroccan0%(38)
Guyanese0%(33)
Latvian0%(25)
Serbian0%(2)
Section 05

Education

Bachelor's degree or higher
40.7%
+15.9 ptssince 2000
from 24.8% in 2000
US average: 35.6%
High school or higher
95.3%
+10.0 ptssince 2000
from 85.3% in 2000
US average: 89.6%
Graduate degree
15.7%
+6.9 ptssince 2000
from 8.8% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
34.4 min
+28%since 2000
from 26.9 min in 2000
US average: 26.5
Drive alone to work
73.9%
−8.3 ptssince 2009
from 82.3% in 2009
US average: 68.9%
Carpooled to work
6.7%
−3.3 ptssince 2009
from 10.0% in 2009
US average: 8.5%
Public transit
0.3%
−0.5 ptssince 2009
from 0.8% in 2009
US average: 3.2%
Worked from home
17.3%
+12.4 ptssince 2009
from 4.9% in 2009
US average: 15.0%
Walked to work
1.0%
−0.5 ptssince 2009
from 1.6% in 2009
US average: 2.4%
Biked to work
0.1%
Unchangedsince 2009
from 0.1% in 2009
US average: 0.4%
No vehicle available
3.3%
−0.5 ptssince 2009
from 3.7% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
3.5%
−0.6 ptssince 2011
from 4.1% in 2011
US average: 5.2%
Labor force participation
67.6%
−1.6 ptssince 2011
from 69.2% in 2011
US average: 63.5%
Women 20-64 in the labor force
78.9%
+0.4 ptssince 2020
from 78.5% in 2020
US average: 74.6%
Self-employed
15.1%
+1.7 ptssince 2009
from 13.4% in 2009
US average: 13.1%
Management & professional
50.2%
+8.9 ptssince 2009
from 41.4% in 2009
US average: 42.5%
Section 08

People & community

Male
49.7%
+0.2 ptssince 2009
from 49.6% in 2009
Female
50.3%
−0.2 ptssince 2009
from 50.4% in 2009
Foreign born
5.5%
+2.1 ptssince 2009
from 3.4% in 2009
US average: 14.1%
Veterans
7.5%
−2.9 ptssince 2009
from 10.5% in 2009
US average: 6.2%
With a disability
12.4%
+3.8 ptssince 2012
from 8.6% in 2012
US average: 13.3%
Uninsured
2.9%
−3.3 ptssince 2013
from 6.2% in 2013
US average: 8.4%
Broadband at home
92.5%
+9.2 ptssince 2017
from 83.3% in 2017
US average: 91.0%
Computer in household
95.7%
+3.2 ptssince 2020
from 92.5% in 2020
US average: 95.5%
Same house as last year
93.3%
+1.6 ptssince 2020
from 91.7% in 2020
US average: 87.7%
English only at home
93.1%
−1.8 ptssince 2016
from 94.9% in 2016
US average: 77.7%
Spanish at home
2.9%
+0.8 ptssince 2016
from 2.1% in 2016
US average: 13.6%
Marital status
Men 15+
Never married29.1%(20,670)
Married61.1%(43,330)
Widowed3%(2,132)
Divorced6.8%(4,811)
Women 15+
Never married24%(17,457)
Married57.4%(41,788)
Widowed8.4%(6,137)
Divorced10.2%(7,459)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
2.9%
−3.3 ptssince 2013
from 6.2% in 2013
US average: 8.4%
Employer-based
72.0%
−0.6 ptssince 2020
from 72.6% in 2020
US average: 54.8%
Direct-purchase
14.5%
+0.3 ptssince 2020
from 14.2% in 2020
US average: 13.8%
Medicare
17.9%
+0.3 ptssince 2020
from 17.6% in 2020
US average: 18.4%
Medicaid
10.8%
−0.1 ptssince 2020
from 10.9% in 2020
US average: 20.9%
VA health care
1.5%
−0.1 ptssince 2020
from 1.6% in 2020
US average: 2.2%
Any private
84.5%
Unchangedsince 2020
from 84.5% in 2020
US average: 67.1%
Any public
27.6%
+0.5 ptssince 2020
from 27.1% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)27%(2,765)
US avg: 26.4%
Gulf War (1990s)25.1%(2,574)
US avg: 24.3%
Vietnam era29.1%(2,978)
US avg: 33.1%
Korean War5.3%(539)
US avg: 4.5%
World War II1.2%(126)
US avg: 1%

Share of the 10,248 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time

Carroll County, decade by decade

Carroll County population, inflation-adjusted income and home value, education, and diversity by year
YearPopulationMedian household incomeMedian home valueBachelor's degree+Diversity score
1990123,372$101,710$303,84919.6%8.0
2000150,897$109,338$297,47624.8%11.9
2010167,134$117,418$504,79531.1%20.8
2020172,891$120,682$416,21437.0%34.5
2024175,321$118,211$434,00040.7%35.0

Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.

Drill deeper

Places similar to Carroll County

Charles County
Pop 176,593
Lower Connecticut River Valley Planning Region
Pop 177,311
El Dorado County
Pop 192,323
Kendall County
Pop 145,470
Places similar to Carroll County
Head to head

Compare Carroll County to nearby counties

CARROLL COUNTY VS
Frederick County
Income$122,002+3%
Home value$464,600+7%
Population302,883+71%
SEE FULL COMPARISON →
CARROLL COUNTY VS
Howard County
Income$149,763+27%
Home value$597,900+38%
Population339,183+92%
SEE FULL COMPARISON →
CARROLL COUNTY VS
Baltimore County
Income$91,768−22%
Home value$349,300−20%
Population847,650+380%
SEE FULL COMPARISON →
CARROLL COUNTY VS
Adams County
Income$84,092−29%
Home value$268,500−38%
Population107,594−39%
SEE FULL COMPARISON →
Frequently asked

How many people live in Carroll County, Maryland?

Carroll County, Maryland has about 175,321 residents according to the 2024 American Community Survey.

What is the median household income in Carroll County, Maryland?

The typical household in Carroll County, Maryland earns about $118,211 a year. Half of households make more than that, and half make less.

Is Carroll County, Maryland expensive?

In Carroll County, Maryland, the median home is worth about $434,000, and the typical rent is about $1,427 a month.

How educated are people in Carroll County, Maryland?

About 40.7% of adults age 25 and over in Carroll County, Maryland hold a bachelor's degree or higher.

What is the poverty rate in Carroll County, Maryland?

About 5.2% of people in Carroll County, Maryland live below the federal poverty line.

Has Carroll County, Maryland grown since 1990?

Yes, Carroll County, Maryland has grown since 1990. The population has added about 51,949 residents, a change of about 42 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →