| Back to United States. Population (2000): 29,370
Housing units: 15,601 Land area: 4.7 sq. mi. Water area: 0.0 sq. mi. White population: 24217 Black population: 1275 American Indian population: 89 Asian population: 1475 Native Hawaiian and Other Pacific Islander population: 31 Some other race population: 1138 Two or more races population: 1145 Urban population: 29370 Rural population: 0 Median age: 38.2 Average household size: 1.97 Median household income (1999): $52662
 
Nearest zip codes: 91401, 91403, 91607, 91411, 91604, 91405.
Year house built:
- 1999 to March 2000: 114
- 1995 to 1998: 484
- 1990 to 1994: 637
- 1980 to 1989: 1851
- 1970 to 1979: 2552
- 1960 to 1969: 2568
- 1950 to 1959: 3815
- 1940 to 1949: 2485
- 1939 or earlier: 1054
Bedrooms in owner-occupied houses in 91423:
- no bedroom: 19
- 1 bedrooms: 281
- 2 bedrooms: 2113
- 3 bedrooms: 2603
- 4 bedrooms: 838
- 5 or more bedrooms: 272
Bedrooms in renter-occupied apartments and housing units:
- no bedroom: 741
- 1 bedrooms: 3408
- 2 bedrooms: 3872
- 3 bedrooms: 563
- 4 bedrooms: 60
- 5 or more bedrooms: 24
Vehicles available in 91423 zip code in owner-occupied houses:
- no vehicle: 259
- 1 vehicle: 1964
- 2 vehicles: 3030
- 3 vehicles: 667
- 4 vehicles: 155
- 5 or more vehicles: 51
Vehicles available in renter-occupied housing units:
- no vehicle: 721
- 1 vehicle: 5002
- 2 vehicles: 2559
- 3 vehicles: 313
- 4 vehicles: 73
- 5 or more vehicles: 0
Estimate of home value of owner-occupied houses in 2000 in zip code 91423:
- Less than $10,000: 9
- $10,000 to $14,999: 8
- $15,000 to $19,999: 0
- $20,000 to $24,999: 0
- $25,000 to $29,999: 16
- $30,000 to $34,999: 0
- $35,000 to $39,999: 32
- $40,000 to $49,999: 4
- $50,000 to $59,999: 0
- $60,000 to $69,999: 0
- $70,000 to $79,999: 0
- $80,000 to $89,999: 0
- $90,000 to $99,999: 17
- $100,000 to $124,999: 54
- $125,000 to $149,999: 41
- $150,000 to $174,999: 35
- $175,000 to $199,999: 84
- $200,000 to $249,999: 390
- $250,000 to $299,999: 560
- $300,000 to $399,999: 1348
- $400,000 to $499,999: 825
- $500,000 to $749,999: 922
- $750,000 to $999,999: 308
- $1,000,000 or more: 234
First ancestries reported:
- Other groups: 6731
- Russian: 2502
- German: 2158
- Irish: 1784
- Italian: 1627
- English: 1454
- Polish: 1216
- United States or American: 1201
- Armenian: 991
- Iranian: 595
- French (except Basque): 455
- Israeli: 430
- Scottish: 413
- European: 366
- Eastern European: 323
- Hungarian: 303
- Arab:: 268
- Austrian: 246
- Ukrainian: 235
- British: 225
- Subsaharan African:: 200
- Swedish: 197
- Norwegian: 191
- Scotch-Irish: 183
- Romanian: 159
- Greek: 144
- Dutch: 133
- African: 125
- Welsh: 125
- Lebanese: 122
- French Canadian: 118
- Canadian: 81
- West Indian (excluding Hispanic groups):: 80
- Danish: 79
- Lithuanian: 78
- Bulgarian: 71
- South African: 70
- Egyptian: 69
- Scandinavian: 59
- Belgian: 57
- Swiss: 51
- Portuguese: 50
- Brazilian: 41
- Czech: 39
- Turkish: 37
- Croatian: 36
- Northern European: 35
- Macedonian: 27
- Moroccan: 23
- Finnish: 22
- Trinidadian and Tobagonian: 22
- Basque: 21
- Iraqi: 21
- Yugoslavian: 20
- Serbian: 20
- Syrian: 18
- Albanian: 18
- West Indian: 17
- Latvian: 15
- Haitian: 15
- Czechoslovakian: 15
- Belizean: 14
- Slovak: 14
- Icelander: 12
- British West Indian: 12
- Estonian: 11
- Slovene: 9
- Arab/Arabic: 8
- Assyrian/Chaldean/Syriac: 8
- Guyanese: 8
- Jordanian: 7
- Slavic: 6
- Other Subsaharan African: 5
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