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Columbia CDP, MD

ZIP 21045 — People & Community

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Upper Middle ClassLow Snow AreaRemote Work Hub

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 21045

21045 has a population of 40,866 with a median age of 38.4 yrs (48.1% male).

Race & Ethnicity
White
45.0%-27% vs US avg
x
Black
32.5%+162% vs US avg
x
Asian
8.7%+48% vs US avg
x
Hispanic
11.1%-41% vs US avg
x
Other / Two+
2.7%
x
Age Groups
0–17
22.5%+2% vs US avg
x
18–64
59.7%-3% vs US avg
x
65+
17.8%+9% vs US avg
x
Education
Less than HS
6.5%-42% vs US avg
x
High school
13.6%-48% vs US avg
x
Some college
22.5%-22% vs US avg
x
Bachelor's+
57.4%+70% vs US avg
x
Marital Status
Married
48.5%+1% vs US avg
x
Never married
34.7%+3% vs US avg
x
Divorced
11.7%+14% vs US avg
x
Widowed / Separated
5.1%
x
Diversity Index
67/100

Higher = more diverse (Simpson index from race/ethnicity)

Social & household profile

Poverty, nativity, veterans, disability, family structure, and births (ACS).

Poverty Rate
8.4%-27% vs US avg
x
Foreign Born
28.5%+105% vs US avg
x
Veterans
8.2%+37% vs US avg
x
Disability
12.8%-5% vs US avg
x
Single Parent
9.2%+14% vs US avg
x
Recent Births
59.4%+924% vs US avg
x
Top ancestry
GermanIrishEnglish

Health & Community Indicators in 21045

Poverty Rate
8.4%-27% vs US avg
x
Veterans
8.2%+37% vs US avg
x
Foreign Born
28.5%+105% vs US avg
x
Single Parent
9.2%+14% vs US avg
x
Disability
12.8%-5% vs US avg
x
Uninsured
6.3%-21% vs US avg
x
SNAP Benefits
9.4%-20% vs US avg
x
Private School
0.7%-93% vs US avg
x
Recent Births
59.4%+924% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population40,866
Median age38.4
Poverty rate8.4%
Demographics statistics
Demographics
White45.0%
Hispanic11.1%
Black32.5%
Asian8.7%
Foreign-born28.5%