| Back to United States. City: Westminster, MD Population (2000): 18,131
Housing units: 6,603 Land area: 72.4 sq. mi. Water area: 0.0 sq. mi. White population: 17451 Black population: 257 American Indian population: 37 Asian population: 188 Native Hawaiian and Other Pacific Islander population: 7 Some other race population: 62 Two or more races population: 129 Urban population: 8348 Rural population: 9783 Median age: 36.6 Average household size: 2.80 Median household income (1999): $58597
 
Nearest zip codes: 21157, 21776, 17340, 21787, 21791, 21048.
Year house built:
- 1999 to March 2000: 140
- 1995 to 1998: 669
- 1990 to 1994: 1077
- 1980 to 1989: 2233
- 1970 to 1979: 941
- 1960 to 1969: 409
- 1950 to 1959: 253
- 1940 to 1949: 97
- 1939 or earlier: 743
Bedrooms in owner-occupied houses in Westminster, MD (21158):
- no bedroom: 9
- 1 bedrooms: 105
- 2 bedrooms: 468
- 3 bedrooms: 3030
- 4 bedrooms: 1356
- 5 or more bedrooms: 274
Bedrooms in renter-occupied apartments and housing units:
- no bedroom: 52
- 1 bedrooms: 228
- 2 bedrooms: 364
- 3 bedrooms: 433
- 4 bedrooms: 50
- 5 or more bedrooms: 0
Vehicles available in 21158 zip code in owner-occupied houses:
- no vehicle: 153
- 1 vehicle: 1038
- 2 vehicles: 2456
- 3 vehicles: 1087
- 4 vehicles: 381
- 5 or more vehicles: 127
Vehicles available in renter-occupied housing units:
- no vehicle: 136
- 1 vehicle: 403
- 2 vehicles: 518
- 3 vehicles: 55
- 4 vehicles: 15
- 5 or more vehicles: 0
Estimate of home value of owner-occupied houses in 2000 in zip code 21158:
- Less than $10,000: 0
- $10,000 to $14,999: 0
- $15,000 to $19,999: 10
- $20,000 to $24,999: 5
- $25,000 to $29,999: 0
- $30,000 to $34,999: 0
- $35,000 to $39,999: 0
- $40,000 to $49,999: 0
- $50,000 to $59,999: 13
- $60,000 to $69,999: 0
- $70,000 to $79,999: 35
- $80,000 to $89,999: 127
- $90,000 to $99,999: 340
- $100,000 to $124,999: 956
- $125,000 to $149,999: 819
- $150,000 to $174,999: 822
- $175,000 to $199,999: 547
- $200,000 to $249,999: 580
- $250,000 to $299,999: 223
- $300,000 to $399,999: 136
- $400,000 to $499,999: 44
- $500,000 to $749,999: 7
- $750,000 to $999,999: 7
- $1,000,000 or more: 0
First ancestries reported:
- German: 4156
- Irish: 2032
- United States or American: 1478
- English: 1427
- Other groups: 944
- Italian: 679
- Polish: 642
- Scottish: 245
- French (except Basque): 244
- European: 183
- Scotch-Irish: 129
- Norwegian: 120
- Dutch: 112
- Swedish: 84
- Northern European: 75
- Russian: 69
- Greek: 58
- Eastern European: 50
- French Canadian: 48
- Hungarian: 44
- Welsh: 41
- British: 41
- Iranian: 27
- West Indian (excluding Hispanic groups):: 27
- Czech: 26
- Lithuanian: 26
- Czechoslovakian: 20
- Trinidadian and Tobagonian: 19
- Subsaharan African:: 19
- Swiss: 17
- Croatian: 16
- Serbian: 14
- African: 14
- Danish: 14
- Slavic: 11
- Canadian: 9
- Armenian: 9
- Dutch West Indian: 8
- Turkish: 7
- Israeli: 7
- Ukrainian: 6
- Yugoslavian: 6
- Portuguese: 6
- Finnish: 6
- Ghanian: 5
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