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Carroll County, MD

8 cities and towns and 8 ZIP codes in Carroll County, Maryland.

Population

175,321

Land area

448sq mi

People per sq mi

392

ZIP codes

8

Cities and towns in Carroll County

Full map

Carroll County at a glance

  • Carroll County is 39% less dense than Maryland as a whole.
  • By population, it ranks 9th among 24 counties in Maryland.
  • The median household income is $118,211, 14% above the Maryland median of $103,678.
  • A typical owner-occupied home is valued at $434,000 (3% above Maryland) and median rent is $1,427 a month.
  • Its largest cities are Eldersburg (31,695), Westminster (20,445) and Taneytown (7,932).

Local data for Carroll County, MD

Counts from official public data

Housing and community stats

Carroll County, MD, American Community Survey 2020-2024

Full profile

Median household income

$118,211

Poverty rate

5.2%

Median home value

$434,000

Prices +1.7% in a year

Median rent

$1,427/mo

Homeownership

84.3%

Bachelor's or higher

40.7%

Median age

41.3

Average commute

34.4 min

Largest reported origins and ancestries: German Americans (40,468), Irish Americans (30,819), Italian Americans (12,705).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

2.7%

Sep 2026, -0.7 pts in a year

Average annual pay

$59,307

59,443 jobs, 2025

Income per person

$78,696

BEA, 2024

Federal spending

$1.1B

FY 2026, $6,548 per person

PPP loans

$284M

3,482 loans, 33,234 jobs reported

Campaign donations

$485K

Itemized, 2026 cycle

EconomyFederal spendingPPP loans

How people get to work

Carroll County, MD, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone73.9%
  • Carpooled6.7%
  • Public transit0.3%
  • Walked1.0%
  • Bicycle0.1%
  • Taxi, ride-hailing, motorcycle or other0.6%
  • Worked from home17.3%

Average one-way commute: 34.4 minutes for people who do not work from home.

Environment and hazard risk

Carroll County, MD, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: strong wind

Storm events since 1996

1,083

Most often thunderstorm wind

Flood insurance policies

177

0.3% of homes, county

July high / Jan low

85° / 21°F

44.1 inches of rain a year

Hazards, floods and storm historyCheck a flood zone24 historic places

Health statistics

Share of adults in Carroll County, MD, CDC PLACES estimates

All 40 measures

Obesity

37.7%

U.S. 33.3% +4.4 pts

Diabetes

10.3%

U.S. 12.1% -1.8 pts

Smoking

10.9%

U.S. 12.8% -1.9 pts

Uninsured (18-64)

6.3%

U.S. 11.1% -4.8 pts

Cities, towns and ZIP codes in Carroll County

Population shown

·

Frequently asked questions

What is the largest city in Carroll County, MD?
Eldersburg is the largest city or town in Carroll County, with about 31,695 residents.
How many ZIP codes are in Carroll County?
Carroll County includes 8 ZIP Code Tabulation Areas, including 21048, 21074, 21102, 21157, 21158.
What is the population of Carroll County, MD?
About 175,321 people live in Carroll County, based on American Community Survey 5-year estimates.
What counties border Carroll County?
Carroll County borders Baltimore County, York County, PA, Howard County, Frederick County, Adams County, PA.

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023

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