| Back to United States. City: Grundy Center, IA Population (2000): 3,253
Housing units: 1,446 Land area: 95.1 sq. mi. Water area: 0.0 sq. mi. White population: 3220 Black population: 3 American Indian population: 0 Asian population: 12 Native Hawaiian and Other Pacific Islander population: 0 Some other race population: 3 Two or more races population: 15 Urban population: 0 Rural population: 3253 Median age: 42.9 Average household size: 2.33 Median household income (1999): $38750
 
Nearest zip codes: 50642, 50652, 50609, 50624, 50680, 50669.
Year house built:
- 1999 to March 2000: 11
- 1995 to 1998: 33
- 1990 to 1994: 42
- 1980 to 1989: 96
- 1970 to 1979: 252
- 1960 to 1969: 149
- 1950 to 1959: 263
- 1940 to 1949: 152
- 1939 or earlier: 443
Bedrooms in owner-occupied houses in Grundy Center, IA (50638):
- no bedroom: 0
- 1 bedrooms: 33
- 2 bedrooms: 241
- 3 bedrooms: 571
- 4 bedrooms: 222
- 5 or more bedrooms: 32
Bedrooms in renter-occupied apartments and housing units:
- no bedroom: 0
- 1 bedrooms: 66
- 2 bedrooms: 96
- 3 bedrooms: 68
- 4 bedrooms: 23
- 5 or more bedrooms: 5
Vehicles available in 50638 zip code in owner-occupied houses:
- no vehicle: 18
- 1 vehicle: 302
- 2 vehicles: 523
- 3 vehicles: 202
- 4 vehicles: 33
- 5 or more vehicles: 21
Vehicles available in renter-occupied housing units:
- no vehicle: 52
- 1 vehicle: 128
- 2 vehicles: 52
- 3 vehicles: 23
- 4 vehicles: 3
- 5 or more vehicles: 0
Estimate of home value of owner-occupied houses in 2000 in zip code 50638:
- Less than $10,000: 0
- $10,000 to $14,999: 8
- $15,000 to $19,999: 8
- $20,000 to $24,999: 7
- $25,000 to $29,999: 22
- $30,000 to $34,999: 25
- $35,000 to $39,999: 38
- $40,000 to $49,999: 77
- $50,000 to $59,999: 99
- $60,000 to $69,999: 85
- $70,000 to $79,999: 160
- $80,000 to $89,999: 86
- $90,000 to $99,999: 91
- $100,000 to $124,999: 93
- $125,000 to $149,999: 33
- $150,000 to $174,999: 22
- $175,000 to $199,999: 18
- $200,000 to $249,999: 9
- $250,000 to $299,999: 6
- $300,000 to $399,999: 0
- $400,000 to $499,999: 3
- $500,000 to $749,999: 0
- $750,000 to $999,999: 0
- $1,000,000 or more: 5
First ancestries reported:
- German: 1511
- United States or American: 254
- Irish: 195
- English: 160
- Norwegian: 132
- Other groups: 71
- Dutch: 68
- Danish: 47
- Czech: 41
- Swedish: 38
- Scotch-Irish: 30
- French (except Basque): 29
- Scottish: 26
- Polish: 19
- Italian: 15
- British: 14
- Czechoslovakian: 5
- Swiss: 3
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