Demographic and housing estimates in ZIP Code 21230
Total population| Total population | 33,995 |
| Male | 16,546 |
| Female | 17,449 |
Population by age| Total population | 33,995 |
| Under 5 years | 2,337 |
| 5 to 9 years | 2,173 |
| 10 to 14 years | 1,756 |
| 15 to 19 years | 1,028 |
| 20 to 24 years | 2,038 |
| 25 to 34 years | 9,457 |
| 35 to 44 years | 5,049 |
| 45 to 54 years | 3,098 |
| 55 to 59 years | 1,708 |
| 60 to 64 years | 1,515 |
| 65 to 74 years | 2,448 |
| 75 to 84 years | 939 |
| 85 years and over | 449 |
| Median age (years) | 33.0 |
| Under 18 years | 6,963 |
| 16 years and over | 27,513 |
| 18 years and over | 27,032 |
| 21 years and over | 26,551 |
| 62 years and over | 4,702 |
| 65 years and over | 3,836 |
Population by race| Total population | 33,995 |
| One race | 32,612 |
| White | 20,349 |
| Black or African American | 8,782 |
| American Indian and Alaska Native | 214 |
| Asian | 1,001 |
| Native Hawaiian and Other Pacific Islander | 8 |
| Some other race | 2,258 |
| Two or more races | 1,383 |
Citizen, voting age population| Citizen, VOTING AGE 18 and over population | 25,739 |
| Male Citizen, VOTING AGE 18 and over population | 12,195 |
| Female Citizen, VOTING AGE 18 and over population | 13,544 |
Social characteristics in ZIP Code 21230
Households by type| Total households | 15,308 |
| Family households (families) | 4,773 |
| Married-couple family | 1,661 |
| Male householder, no wife present, family | 3,790 |
| Female householder, no husband present, family | 2,759 |
| Nonfamily households | 5,084 |
| Average household size | 3,049 |
| Average family size | 2.21 |
Economic characteristics in ZIP Code 21230
Income and benefits (in 2021 inflation-adjusted dollars)| Total households | 15,308 |
| Less than $10,000 | 870 |
| $10,000 to $14,999 | 534 |
| $15,000 to $24,999 | 1,086 |
| $25,000 to $34,999 | 867 |
| $35,000 to $49,999 | 1,245 |
| $50,000 to $74,999 | 2,040 |
| $75,000 to $99,999 | 1,604 |
| $100,000 to $149,999 | 3,099 |
| $150,000 to $199,999 | 1,733 |
| $200,000 or more | 2,230 |
| Median household income (dollars) | 88,962 |
Housing characteristics in ZIP Code 21230
Housing occupancy| Total housing units | 17,418 |
| Occupied housing units | 15,308 |
| Vacant housing units | 2,110 |
Units in structure| Total housing units | 17,418 |
| 1-unit, detached | 1,384 |
| 1-unit, attached | 11,309 |
| 2 units | 675 |
| 3 or 4 units | 441 |
| 5 to 9 units | 346 |
| 10 to 19 units | 216 |
| 20 or more units | 3,027 |
| Mobile home | 20 |
| Boat, RV, van, etc. | 0 |
Year structure built| Total housing units | 17,418 |
| Built 2014 or later | 5 |
| Built 2010 to 2013 | 1,673 |
| Built 2000 to 2009 | 1,277 |
| Built 1990 to 1999 | 818 |
| Built 1980 to 1989 | 784 |
| Built 1970 to 1979 | 591 |
| Built 1960 to 1969 | 987 |
| Built 1950 to 1959 | 1,345 |
| Built 1940 to 1949 | 821 |
| Built 1939 or earlier | 9,117 |
Rooms| Total housing units | 17,418 |
| 1 room | 307 |
| 2 rooms | 693 |
| 3 rooms | 1,886 |
| 4 rooms | 3,062 |
| 5 rooms | 3,963 |
| 6 rooms | 3,895 |
| 7 rooms | 1,930 |
| 8 rooms | 967 |
| 9 rooms or more | 715 |
| Median rooms | 5.2 |
Bedrooms| Total housing units | 17,418 |
| No bedroom | 311 |
| 1 bedroom | 2,996 |
| 2 bedrooms | 7,001 |
| 3 bedrooms | 5,770 |
| 4 bedrooms | 1,230 |
| 5 or more bedrooms | 110 |
Housing tenure| Occupied housing units | 15,308 |
| Owner-occupied | 7,935 |
| Renter-occupied | 7,373 |
| Average household size of owner-occupied unit | 2.22 |
| Average household size of renter-occupied unit | 2.21 |
Year householder moved into unit| Occupied housing units | 15,308 |
| Moved in 2017 or later | 2,395 |
| Moved in 2015 to 2016 | 5,781 |
| Moved in 2010 to 2014 | 2,878 |
| Moved in 2000 to 2009 | 1,911 |
| Moved in 1990 to 1999 | 1,104 |
| Moved in 1989 and earlier | 1,239 |
Value| Owner-occupied units | 7,935 |
| Less than $50,000 | 282 |
| $50,000 to $99,999 | 841 |
| $100,000 to $149,999 | 521 |
| $150,000 to $199,999 | 704 |
| $200,000 to $299,999 | 1,768 |
| $300,000 to $499,999 | 2,725 |
| $500,000 to $999,999 | 934 |
| $1,000,000 or more | 160 |
| Median (dollars) | 293,000 |
Mortgage status| Owner-occupied units | 7,935 |
| Housing units with a mortgage | 5,725 |
| Housing units without a mortgage | 2,210 |
Gross rent| Occupied units paying rent | 7,226 |
| Less than $500 | 761 |
| $500 to $999 | 727 |
| $1,000 to $1,499 | 1,773 |
| $1,500 to $1,999 | 2,033 |
| $2,000 to $2,499 | 1,053 |
| $2,500 to $2,999 | 485 |
| $3,000 or more | 394 |
| Median (dollars) | 1,587 |
| No rent paid | 147 |
Data is based on 2021 Census