| Back to United States. City: Mason City, IA Population (2000): 31,291
Housing units: 13,903 Land area: 154.6 sq. mi. Water area: 0.6 sq. mi. White population: 29907 Black population: 346 American Indian population: 56 Asian population: 233 Native Hawaiian and Other Pacific Islander population: 4 Some other race population: 321 Two or more races population: 424 Urban population: 28330 Rural population: 2961 Median age: 38.4 Average household size: 2.29 Median household income (1999): $35132
 
Nearest zip codes: 50456, 50464, 50469, 50428, 504HH, 50458.
Year house built:
- 1999 to March 2000: 148
- 1995 to 1998: 301
- 1990 to 1994: 308
- 1980 to 1989: 809
- 1970 to 1979: 1907
- 1960 to 1969: 1388
- 1950 to 1959: 2593
- 1940 to 1949: 1674
- 1939 or earlier: 4760
Bedrooms in owner-occupied houses in Mason City, IA (50401):
- no bedroom: 4
- 1 bedrooms: 266
- 2 bedrooms: 2566
- 3 bedrooms: 4223
- 4 bedrooms: 1713
- 5 or more bedrooms: 240
Bedrooms in renter-occupied apartments and housing units:
- no bedroom: 208
- 1 bedrooms: 1615
- 2 bedrooms: 1672
- 3 bedrooms: 484
- 4 bedrooms: 150
- 5 or more bedrooms: 31
Vehicles available in 50401 zip code in owner-occupied houses:
- no vehicle: 358
- 1 vehicle: 2613
- 2 vehicles: 3956
- 3 vehicles: 1444
- 4 vehicles: 470
- 5 or more vehicles: 171
Vehicles available in renter-occupied housing units:
- no vehicle: 1015
- 1 vehicle: 2062
- 2 vehicles: 794
- 3 vehicles: 200
- 4 vehicles: 50
- 5 or more vehicles: 39
Estimate of home value of owner-occupied houses in 2000 in zip code 50401:
- Less than $10,000: 39
- $10,000 to $14,999: 16
- $15,000 to $19,999: 57
- $20,000 to $24,999: 63
- $25,000 to $29,999: 216
- $30,000 to $34,999: 242
- $35,000 to $39,999: 387
- $40,000 to $49,999: 899
- $50,000 to $59,999: 840
- $60,000 to $69,999: 1033
- $70,000 to $79,999: 923
- $80,000 to $89,999: 632
- $90,000 to $99,999: 703
- $100,000 to $124,999: 701
- $125,000 to $149,999: 503
- $150,000 to $174,999: 297
- $175,000 to $199,999: 233
- $200,000 to $249,999: 213
- $250,000 to $299,999: 120
- $300,000 to $399,999: 38
- $400,000 to $499,999: 16
- $500,000 to $749,999: 0
- $750,000 to $999,999: 0
- $1,000,000 or more: 0
First ancestries reported:
- German: 9681
- Norwegian: 3908
- Irish: 2183
- Other groups: 1840
- English: 1632
- United States or American: 1545
- Swedish: 621
- Danish: 450
- Dutch: 400
- French (except Basque): 371
- Czech: 358
- Italian: 250
- Scottish: 232
- Polish: 221
- Scotch-Irish: 204
- Greek: 171
- Scandinavian: 160
- European: 150
- Welsh: 107
- Russian: 99
- Yugoslavian: 86
- French Canadian: 77
- Swiss: 63
- Finnish: 59
- Czechoslovakian: 58
- Northern European: 50
- British: 35
- Hungarian: 34
- Belgian: 28
- Arab:: 26
- Egyptian: 26
- Macedonian: 21
- Subsaharan African:: 21
- Austrian: 20
- Other Subsaharan African: 17
- Croatian: 17
- Lithuanian: 17
- Luxemburger: 16
- Pennsylvania German: 15
- Portuguese: 13
- Estonian: 10
- Ukrainian: 9
- Celtic: 9
- Serbian: 6
- Slovene: 6
- African: 4
- Canadian: 2
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