Download an Excel file* of this document: polk_county_iowa.xls.
| Selected Characteristics1 | 1990 | 2000 | 2005 ACS | 2005 ACS MOE3 |
|---|---|---|---|---|
| Includes GQ Pop | Does not include GQ Pop | |||
| Total Persons | 327,140 | 374,601 | x | x |
| Total Persons in Household | 318,917 | 365,671 | 391,914 | x |
| Total Workers, Place of Residence | 173,353 | 198,183 | 210,192 | 3,841 |
| Total Workers, Place of Work | 203,482 | 234,065 | 254,692 | 4,763 |
| Employment-Residence Ratio | 1.17 | 1.18 | 1.21 | 0.05 |
W2. MODE TO WORK1 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1990 | 2000 | 2005 ACS | Sig. Diff. in Number 2000-2005 |
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| Includes GQ pop | Does not include GQ Pop | ||||||||
| Number | Percent | Number | Percent | MOE | Number | Percent | MOE | ||
| Total Workers | 203,482 | 100.0 | 234,065 | 100.0 | 1,308 | 254,692 | 100.0 | 4,763 | Yes |
| Drove alone | 157,617 | 77.5 | 191,955 | 82.0 | 1,350 | 213,849 | 84.0 | 5,026 | Yes |
| 2-person carpool | 25,026 | 12.3 | 22,400 | 9.6 | 641 | 21,098 | 8.3 | 2,536 | No |
| 3-person carpool | 3,229 | 1.6 | 2,625 | 1.1 | 225 | 2,716 | 1.1 | 779 | No |
| 4-or-more-person carpool | 1,991 | 1.0 | 1,595 | 0.7 | 176 | 1,392 | 0.5 | 416 | No |
| Public Transportation | 4,409 | 2.2 | 3,623 | 1.5 | 264 | 2,157 | 0.8 | 673 | Yes |
| Walked | 4,648 | 2.3 | 4,085 | 1.7 | 281 | 3,228 | 1.3 | 1,010 | No |
| Taxicab, motorcycle, bike or other | 1,505 | 0.7 | 1,610 | 0.7 | 177 | 4,372 | 1.7 | 1,373 | Yes |
| Worked at home | 5,057 | 2.5 | 6,165 | 2.6 | 344 | 5,880 | 2.3 | 927 | 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) | 198,425 | 100.0 | 227,900 | 100.0 | 1,319 | 248,812 | 100.0 | 4,779 | Yes |
| Less than 10 minutes | 28,917 | 14.6 | 30,680 | 13.5 | 741 | 31,358 | 12.6 | 3,340 | No |
| 10 to 14 | 36,628 | 18.5 | 41,865 | 18.4 | 851 | 36,949 | 14.9 | 3,377 | Yes |
| 15 to 19 | 42,615 | 21.5 | 45,065 | 19.8 | 879 | 50,065 | 20.1 | 3,538 | Yes |
| 20 to 24 | 36,993 | 18.6 | 43,235 | 19.0 | 863 | 48,526 | 19.5 | 3,464 | Yes |
| 25 to 29 | 11,746 | 5.9 | 15,220 | 6.7 | 533 | 18,695 | 7.5 | 2,394 | Yes |
| 30 to 34 | 19,303 | 9.7 | 23,175 | 10.2 | 651 | 32,252 | 13.0 | 3,239 | Yes |
| 35 to 44 | 7,183 | 3.6 | 9,265 | 4.1 | 420 | 10,403 | 4.2 | 1,606 | No |
| 45 to 59 | 8,577 | 4.3 | 10,360 | 4.5 | 443 | 10,998 | 4.4 | 1,896 | No |
| 60 or more | 6,463 | 3.3 | 9,040 | 4.0 | 415 | 9,566 | 3.8 | 1,429 | No |
| Mean travel time (minutes) | 19.8 | (X) | 21.4 | (X) | NA | 21.6 | (X) | NA | NA |
W4. ARRIVAL TIME AT Work1 |
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| Workers (Did not work at home) | 198,425 | 100.0 | 227,900 | 100.0 | 1,319 | 248,812 | 100.0 | 4,779 | Yes |
| 5:00 - 5:59 a.m. | 7,457 | 3.8 | 11,110 | 4.9 | 458 | 12,918 | 5.2 | 1,804 | No |
| 6:00 - 6:29 a.m. | 9,532 | 4.8 | 12,565 | 5.5 | 486 | 15,173 | 6.1 | 2,008 | Yes |
| 6:30 - 6:59 a.m. | 23,753 | 12.0 | 27,150 | 11.9 | 700 | 32,436 | 13.0 | 2,828 | Yes |
| 7:00 - 7:29 a.m. | 32,214 | 16.2 | 37,115 | 16.3 | 807 | 38,103 | 15.3 | 2,772 | No |
| 7:30 - 7:59 a.m. | 44,854 | 22.6 | 49,170 | 21.6 | 912 | 50,198 | 20.2 | 3,945 | No |
| 8:00 - 8:29 a.m. | 23,670 | 11.9 | 26,665 | 11.7 | 695 | 26,845 | 10.8 | 2,347 | No |
| 8:30 - 8:59 a.m. | 9,828 | 5.0 | 9,850 | 4.3 | 432 | 14,402 | 5.8 | 1,981 | Yes |
| 9:00 a.m. - 11:59 p.m. | 43,774 | 22.1 | 47,805 | 21.0 | 901 | 52,992 | 21.3 | 3,325 | Yes |
| 12:00 a.m. - 4:59 a.m. | 3,343 | 1.7 | 4,670 | 2.0 | 300 | 5,745 | 2.3 | 1,175 | 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.
