US ZIP Code
21158

Westminster, MD

Carroll County  ·  Maryland

● Active
👥 22,404 Population ↑ 7% since 2019
💰 $108,795 Median HH Income
▲ 43% above avg ↑ 16% since 2019
🎂 42.6 Median Age
🏠 $375,100 Median Home Value
▲ 35% above avg ↑ 15% since 2019
🎓 45.3% College Grads
▲ 17% above avg
📊 2.3% Unemployment
▼ 52% below avg ↓ 18% since 2019
ZIP Code Details
ZIP Code21158
CityWestminster
StateMaryland (MD)
CountyCarroll County
Area Code410/443/667
Elevation754 ft
Latitude39.653717
Longitude-77.035127
TimezoneNew York (DST)
FIPS24013
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 51.8% (11,596) Female 48.2% (10,808) ♀

Race & Ethnicity

White: 85.4%Hispanic: 3.6%Black: 5%Asian: 2.5%Other: 3.5%Race
White85.4%
Hispanic3.6%
Black5.0%
Asian2.5%
Other3.5%

Age Breakdown

Under 5
5%
5–17
16%
18–24
7%
25–44
23%
45–64
29%
65+
8%

Key Indicators

Median Age42.6 yrs
Avg Household Size2.66
Below Poverty5.2% ▼ 48% below avg
College Grads45.3% ▲ 17% above avg
Unemployment2.3% ▼ 52% below avg
No HS Diploma65 (0.4%)
HS Graduate4,607 (30%)
Some College1,613 (10.5%)
Associates2,117 (13.8%)
Bachelors1,337 (8.7%)
Graduate Degree5,616 (36.6%)

Education

No HS: 0.4%HS Grad: 30%Some College: 10.5%Associates: 13.8%Bachelors: 8.7%Graduate: 36.6%Edu
No HS0.4%
HS Grad30.0%
Some College10.5%
Associates13.8%
Bachelors8.7%
Graduate36.6%
Housing & Income

Housing Tenure

Owner: 79.7%Renter: 20.3%Tenure
Owner79.7%
Renter20.3%

Home Value Distribution

Under $50k
3%
$50k–100k
1%
$100k–150k
1%
$150k–200k
5%
$200k–300k
22%
$300k–500k
45%
Over $500k
24%

Financials

Median HH Income$108,795 ▲ 43% above avg ↑ 16% since 2019
Median Home Value$375,100 ▲ 35% above avg ↑ 15% since 2019
Home/Income Ratio3.4x (nat avg ~3.5x)
Median Rent$1,735/mo ↑ 17% since 2019
Total Units8,818
Vacant Units448
Avg HH Size2.66

Income Distribution

Under $25k
8%
$25k–50k
6%
$50k–75k
14%
$75k–100k
13%
$100k–150k
26%
$150k–200k
14%
Over $200k
18%
Employment & Commute

How People Get to Work

Drove Alone
84%
Walked
0%
Work From Home
16%

Commute Time

Under 15 min
16%
15–30 min
25%
30–45 min
20%
Over 45 min
39%
Housing Stock

Year Built

Before 1940
0%
1940s–1950s
6%
1960s–1970s
18%
1980s–1990s
21%
2000+
55%

Summary

Total Units8,818
Vacant448
Owner Occupied79.7%
Renter Occupied20.3%
Avg HH Size2.66
Frequently Asked Questions
ZIP code 21158 is in Westminster, MD, in Carroll County.
ZIP code 21158 is located in Maryland (MD).
ZIP code 21158 is in Carroll County, MD.
ZIP 21158 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 21158 is 22,404 people (ACS 2023).
The median household income in ZIP code 21158 is $108,795 (ACS 2023).
The median home value in ZIP 21158 is $375,100 (ACS 2023).
About ZIP Code 21158

ZIP code 21158 is located in Westminster, Maryland, within Carroll County. With a population of 22,404, this is a moderately populated ZIP code with a middle-aged community — the median age is 42.6 years. Economically, 21158 is a upper-middle-income ZIP code: the median household income of $108,795 is above the national average.

Real estate in ZIP code 21158 represents a mid-range housing market. The median home value of $375,100 is above the national average. Renters can expect to pay around $1,735 per month in median rent. Homeownership is strong here — 79.7% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 15% since 2019.

The population of 21158 is primarily White (85.44%). Residents are well-educated — 45.3% hold a bachelor's degree or higher, which is above the national average. Poverty affects a relatively small share of residents at 5.2%. Household income has grown by 16% since 2019.

The unemployment rate in 21158 stands at 2.3%, which is well below the national average. About 15% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 77%.

Overall, ZIP code 21158 in Westminster, MD is characterized as upper-middle-income, well-educated, a middle-aged community, and predominantly owner-occupied. With 22,404 residents, a median household income of $108,795, and a median home value of $375,100, it offers a clear picture of life in this part of Maryland.