Population by Age in Polk County
*Base on 2010 Data
| Total population | 430,640 | 100.00% |
| Under 5 years | 32,816 | 7.62% |
| 5 to 9 years | 30,863 | 7.17% |
| 10 to 14 years | 29,445 | 6.84% |
| 15 to 19 years | 27,808 | 6.46% |
| 20 to 24 years | 28,867 | 6.70% |
| 25 to 29 years | 35,237 | 8.18% |
| 30 to 34 years | 32,261 | 7.49% |
| 35 to 39 years | 29,631 | 6.88% |
| 40 to 44 years | 29,894 | 6.94% |
| 45 to 49 years | 30,903 | 7.18% |
| 50 to 54 years | 29,396 | 6.83% |
| 55 to 59 years | 25,835 | 6.00% |
| 60 to 64 years | 21,139 | 4.91% |
| 65 to 69 years | 14,374 | 3.34% |
| 70 to 74 years | 10,376 | 2.41% |
| 75 to 79 years | 8,302 | 1.93% |
| 80 to 84 years | 6,779 | 1.57% |
| 85 years and over | 6,714 | 1.56% |
Male Population in Polk County
*Base on 2010 Data
| Male population | 211,171 | 49.04% |
| Under 5 years | 16,780 | 3.90% |
| 5 to 9 years | 15,798 | 3.67% |
| 10 to 14 years | 15,243 | 3.54% |
| 15 to 19 years | 14,052 | 3.26% |
| 20 to 24 years | 13,967 | 3.24% |
| 25 to 29 years | 17,401 | 4.04% |
| 30 to 34 years | 16,186 | 3.76% |
| 35 to 39 years | 14,912 | 3.46% |
| 40 to 44 years | 15,008 | 3.49% |
| 45 to 49 years | 15,421 | 3.58% |
| 50 to 54 years | 14,369 | 3.34% |
| 55 to 59 years | 12,493 | 2.90% |
| 60 to 64 years | 10,084 | 2.34% |
| 65 to 69 years | 6,680 | 1.55% |
| 70 to 74 years | 4,637 | 1.08% |
| 75 to 79 years | 3,528 | 0.82% |
| 80 to 84 years | 2,639 | 0.61% |
| 85 years and over | 1,973 | 0.46% |
Female Population in Polk County
*Base on 2010 Data
| Female population | 219,469 | 50.96% |
| Under 5 years | 16,036 | 3.72% |
| 5 to 9 years | 15,065 | 3.50% |
| 10 to 14 years | 14,202 | 3.30% |
| 15 to 19 years | 13,756 | 3.19% |
| 20 to 24 years | 14,900 | 3.46% |
| 25 to 29 years | 17,836 | 4.14% |
| 30 to 34 years | 16,075 | 3.73% |
| 35 to 39 years | 14,719 | 3.42% |
| 40 to 44 years | 14,886 | 3.46% |
| 45 to 49 years | 15,482 | 3.60% |
| 50 to 54 years | 15,027 | 3.49% |
| 55 to 59 years | 13,342 | 3.10% |
| 60 to 64 years | 11,055 | 2.57% |
| 65 to 69 years | 7,694 | 1.79% |
| 70 to 74 years | 5,739 | 1.33% |
| 75 to 79 years | 4,774 | 1.11% |
| 80 to 84 years | 4,140 | 0.96% |
| 85 years and over | 4,741 | 1.10% |
Median Age in Polk County
*Base on 2010 Data
| Both | 34.70% | |
| Male | 33.70% | |
| Female | 35.60% |
Race in Polk County
*Base on 2010 Data
| Total | 430,640 | 100.00% |
| Population of one race | 420,235 | 97.58% |
| White | 364,895 | 84.73% |
| Black or African American | 25,853 | 6.00% |
| American Indian and Alaska Native | 1,384 | 0.32% |
| Asian | 15,220 | 3.53% |
| Asian Indian | 2,521 | 0.59% |
| Chinese | 1,419 | 0.33% |
| Filipino | 624 | 0.14% |
| Japanese | 185 | 0.04% |
| Korean | 878 | 0.20% |
| Vietnamese | 3,396 | 0.79% |
| Other Asian | 6,197 | 1.44% |
| Native Hawaiian and Other Pacific Islander | 254 | 0.06% |
| Native Hawaiian | 82 | 0.02% |
| Guamanian or Chamorro | 55 | 0.01% |
| Samoan | 17 | 0.00% |
| Other Pacific Islander | 100 | 0.02% |
| Some Other Race | 12,629 | 2.93% |
| Population of Two or More Races | 10,405 | 2.42% |
| White; American Indian and Alaska Native | 1,253 | 0.29% |
| White; Asian | 1,938 | 0.45% |
| White; Black or African American | 3,780 | 0.88% |
| White; Some Other Race | 1,462 | 0.34% |
The Population 16 Years in Polk County
*Base on 2010 Data
| Total | 332,019 | 100.00% |
| Male | 160,584 | 48.37% |
| Female | 171,435 | 51.63% |
The Population 18 Years in Polk County
*Base on 2010 Data
| Total | 320,715 | 100.00% |
| Male | 154,740 | 48.25% |
| Female | 165,975 | 51.75% |
The Population 21 Years in Polk County
*Base on 2010 Data
| Total | 304,047 | 100.00% |
| Male | 146,494 | 48.18% |
| Female | 157,553 | 51.82% |
The Population 62 Years in Polk County
*Base on 2010 Data
| Total | 58,477 | 100.00% |
| Male | 25,164 | 43.03% |
| Female | 33,313 | 56.97% |
The Population 65 Years in Polk County
*Base on 2010 Data
| Total | 46,545 | 100.00% |
| Male | 19,457 | 41.80% |
| Female | 27,088 | 58.20% |
Race (total races tallied) in Polk County
*Base on 2010 Data
| White alone or in combination with one or more other races | 374,062 | 84.68% |
| Black or African American alone or in combination with one or more other races | 30,929 | 7.00% |
| American Indian and Alaska Native alone or in combination with one or more other races | 3,474 | 0.79% |
| Asian alone or in combination with one or more other races | 17,817 | 4.03% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 601 | 0.14% |
| Some Other Race alone or in combination with one or more other races | 14,873 | 3.37% |
Hispanic or Latino by Specific Origin in Polk County
*Base on 2010 Data
| Total | 430,640 | 100.00% |
| Hispanic or Latino (of any race) | 32,647 | 7.58% |
| Mexican | 25,143 | 5.84% |
| Puerto Rican | 877 | 0.20% |
| Cuban | 246 | 0.06% |
| Other Hispanic or Latino | 6,381 | 1.48% |
| Not Hispanic or Latino | 397,993 | 92.42% |
Hispanic or Latino and Race in Polk County
*Base on 2010 Data
| Total | 430,640 | 100.00% |
| Hispanic or Latino | 32,647 | 7.58% |
| White alone | 17,185 | 3.99% |
| Black or African American alone | 509 | 0.12% |
| American Indian and Alaska Native alone | 490 | 0.11% |
| Asian alone | 102 | 0.02% |
| Native Hawaiian and Other Pacific Islander alone | 26 | 0.01% |
| Some Other Race alone | 12,024 | 2.79% |
| Two or More Races | 2,311 | 0.54% |
| Not Hispanic or Latino | 397,993 | 92.42% |
| White alone | 347,710 | 80.74% |
| Black or African American alone | 25,344 | 5.89% |
| American Indian and Alaska Native alone | 894 | 0.21% |
| Asian alone | 15,118 | 3.51% |
| Native Hawaiian and Other Pacific Islander alone | 228 | 0.05% |
| Some Other Race alone | 605 | 0.14% |
| Two or More Races | 8,094 | 1.88% |
Relationship in Polk County
*Base on 2010 Data
| Total | 430,640 | 100.00% |
| In households | 421,284 | 97.83% |
| Householder | 170,197 | 39.52% |
| Spouse | 82,125 | 19.07% |
| Child | 123,949 | 28.78% |
| Own child under 18 years | 100,707 | 23.39% |
| Other relatives | 18,444 | 4.28% |
| Under 18 years | 7,021 | 1.63% |
| 65 years and over | 2,149 | 0.50% |
| Nonrelatives | 26,569 | 6.17% |
| Under 18 years | 1,644 | 0.38% |
| 65 years and over | 641 | 0.15% |
| Unmarried partner | 12,862 | 2.99% |
| In group quarters | 9,356 | 2.17% |
| Institutionalized population | 4,339 | 1.01% |
| Male | 1,984 | 0.46% |
| Female | 2,355 | 0.55% |
| Noninstitutionalized population | 5,017 | 1.17% |
| Male | 2,528 | 0.59% |
| Female | 2,489 | 0.58% |
Households by Type in Polk County
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 170,197 | 100.00% |
| Family households (families) | 108,321 | 63.64% |
| With own children under 18 years | 53,257 | 31.29% |
| Husband-wife family | 82,125 | 48.25% |
| With own children under 18 years | 37,340 | 21.94% |
| Male householder, no wife present | 7,420 | 4.36% |
| With own children under 18 years | 4,151 | 2.44% |
| Female householder, no husband present | 18,776 | 11.03% |
| With own children under 18 years | 11,766 | 6.91% |
| Nonfamily households | 61,876 | 36.36% |
| Householder living alone | 48,127 | 28.28% |
| Male | 20,910 | 12.29% |
| 65 years and over | 3,627 | 2.13% |
| Female | 27,217 | 15.99% |
| 65 years and over | 10,595 | 6.23% |
Households with individuals under 18 years in Polk County
*Base on 2010 Data
| Total | 57,326 | 33.68% |
Households with individuals under 65 years in Polk County
*Base on 2010 Data
| Total | 33,612 | 19.75% |
Average Household Size in Polk County
*Base on 2010 Data
| Average household size | 2 | % |
Average Family Size in Polk County
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in Polk County
*Base on 2010 Data
| Total | 182,262 | 100.00% |
| Occupied housing units | 170,197 | 93.38% |
| Vacant housing units | 12,065 | 6.62% |
| For rent | 4,728 | 2.59% |
| Rented, not occupied | 231 | 0.13% |
| For sale only | 2,861 | 1.57% |
| Sold, not occupied | 573 | 0.31% |
| For seasonal, recreational, or occasional use | 705 | 0.39% |
| All other vacants | 2,967 | 1.63% |
Homeowner Vacancy Rate in Polk County
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 2.40% |
Rental Vacancy Rate in Polk County
*Base on 2010 Data
| Rental vacancy rate (percent) | 8.20% |
Housing Tenure(Occupied housing units) in Polk County
*Base on 2010 Data
| Total | 170,197 | 100.00% |
| Owner-occupied housing units | 117,531 | 69.06% |
| Renter-occupied housing units | 52,666 | 30.94% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Polk County
*Base on 2010 Data
| Owner-occupied housing units | 307,321 | 72.95% |
| Renter-occupied housing units | 113,963 | 27.05% |
Average Household Size of Occupied Housing Units by Tenure in Polk County
*Base on 2010 Data
| Owner occupied | 3 | % |
| Renter occupied | 2 | % |