Download an Excel file* of this document: contra_costa_county_california.xls.
| Selected Characteristics1 | 1990 | 2000 | 2005 ACS | 2005 ACS MOE3 |
|---|---|---|---|---|
| Includes GQ Pop | Does not include GQ Pop | |||
| Total Persons | 803,732 | 948,816 | x | x |
| Total Persons in Household | 793,585 | 937,479 | 1,006,486 | x |
| Total Workers, Place of Residence | 401,173 | 442,008 | 458,117 | 8,221 |
| Total Workers, Place of Work | 333,103 | 338,410 | 356,262 | 10,114 |
| Employment-Residence Ratio | 0.83 | 0.77 | 0.78 | 0.04 |
W2. MODE TO WORK1 |
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|---|---|---|---|---|---|---|---|---|---|
| 1990 | 2000 | 2005 ACS | Sig. Diff. in Number 2000-2005 |
||||||
| Includes GQ pop | Does not include GQ Pop | ||||||||
| Number | Percent | Number | Percent | MOE | Number | Percent | MOE | ||
| Total Workers | 333,103 | 100.0 | 338,410 | 100.0 | 2,231 | 356,262 | 100.0 | 10,114 | Yes |
| Drove alone | 255,787 | 76.8 | 256,645 | 75.8 | 2,069 | 274,528 | 77.1 | 9,426 | Yes |
| 2-person carpool | 32,029 | 9.6 | 31,260 | 9.2 | 831 | 31,457 | 8.8 | 3,703 | No |
| 3-person carpool | 5,757 | 1.7 | 6,745 | 2.0 | 391 | 5,849 | 1.6 | 1,710 | No |
| 4-or-more-person carpool | 4,598 | 1.4 | 4,455 | 1.3 | 318 | 4,137 | 1.2 | 1,258 | No |
| Public Transportation | 8,909 | 2.7 | 8,965 | 2.6 | 451 | 10,443 | 2.9 | 2,084 | No |
| Walked | 7,167 | 2.2 | 6,530 | 1.9 | 385 | 6,849 | 1.9 | 1,628 | No |
| Taxicab, motorcycle, bike or other | 5,203 | 1.6 | 4,840 | 1.4 | 332 | 5,705 | 1.6 | 1,273 | No |
| Worked at home | 13,653 | 4.1 | 18,975 | 5.6 | 652 | 17,294 | 4.9 | 2,156 | No |
W3. TRAVEL TIME TO WORK (Universe = Workers who did not work at home)1 |
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| Workers (Did not work at home) | 319,450 | 100.0 | 319,435 | 100.0 | 2,201 | 338,968 | 100.0 | 9,611 | Yes |
| Less than 10 minutes | 42,310 | 13.2 | 38,780 | 12.1 | 922 | 42,454 | 12.5 | 4,021 | No |
| 10 to 14 | 50,505 | 15.8 | 46,610 | 14.6 | 1,007 | 52,466 | 15.5 | 4,870 | Yes |
| 15 to 19 | 50,480 | 15.8 | 47,330 | 14.8 | 1,014 | 47,085 | 13.9 | 4,213 | No |
| 20 to 24 | 41,498 | 13.0 | 42,505 | 13.3 | 964 | 46,486 | 13.7 | 4,455 | No |
| 25 to 29 | 17,092 | 5.4 | 16,535 | 5.2 | 610 | 19,774 | 5.8 | 2,360 | Yes |
| 30 to 34 | 43,500 | 13.6 | 41,885 | 13.1 | 957 | 41,784 | 12.3 | 3,642 | No |
| 35 to 44 | 21,509 | 6.7 | 21,620 | 6.8 | 695 | 23,775 | 7.0 | 3,081 | No |
| 45 to 59 | 27,425 | 8.6 | 28,810 | 9.0 | 799 | 30,782 | 9.1 | 3,167 | No |
| 60 or more | 25,131 | 7.9 | 35,370 | 11.1 | 882 | 34,362 | 10.1 | 4,036 | No |
| Mean travel time (minutes) | 24.8 | (X) | 28.0 | (X) | NA | 25.4 | (X) | NA | NA |
W4. ARRIVAL TIME AT Work1 |
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| Workers (Did not work at home) | 319,450 | 100.0 | 319,435 | 100.0 | 2,201 | 338,968 | 100.0 | 9,611 | Yes |
| 5:00 - 5:59 a.m. | 12,593 | 3.9 | 16,290 | 5.1 | 605 | 17,929 | 5.3 | 2,444 | No |
| 6:00 - 6:29 a.m. | 17,001 | 5.3 | 16,800 | 5.3 | 614 | 18,620 | 5.5 | 2,455 | No |
| 6:30 - 6:59 a.m. | 31,424 | 9.8 | 26,545 | 8.3 | 768 | 26,978 | 8.0 | 2,855 | No |
| 7:00 - 7:29 a.m. | 42,595 | 13.3 | 36,905 | 11.6 | 901 | 42,400 | 12.5 | 3,577 | Yes |
| 7:30 - 7:59 a.m. | 54,785 | 17.1 | 51,825 | 16.2 | 1,058 | 45,695 | 13.5 | 4,019 | Yes |
| 8:00 - 8:29 a.m. | 49,163 | 15.4 | 49,830 | 15.6 | 1,039 | 50,020 | 14.8 | 4,065 | No |
| 8:30 - 8:59 a.m. | 27,951 | 8.7 | 25,270 | 7.9 | 750 | 29,990 | 8.8 | 3,379 | Yes |
| 9:00 a.m. - 11:59 p.m. | 77,730 | 24.3 | 83,895 | 26.3 | 1,322 | 99,481 | 29.3 | 6,686 | Yes |
| 12:00 a.m. - 4:59 a.m. | 6,208 | 1.9 | 8,115 | 2.5 | 429 | 7,855 | 2.3 | 1,591 | No |
Notes:
1. Please read notes.cfm
2. Total Employed includes Civilian Employed and those working in the Armed Forces.
3. MOE: Margin of Error. Please see notes.cfm. MOE could not be calculated for Total Employed.
4. x: Cannot be calculated. NA: Not calculated.
Sources: U.S. Census Bureau - 1990 STF1, 1990 STF3, 1990 CTPP, 2000 CTPP, 2000 SF1, 2000 SF3, and 2005 ACS.
