Population by Age in O'brien County
*Base on 2010 Data
| Total population | 14,398 | 100.00% |
| Under 5 years | 922 | 6.40% |
| 5 to 9 years | 937 | 6.51% |
| 10 to 14 years | 948 | 6.58% |
| 15 to 19 years | 887 | 6.16% |
| 20 to 24 years | 656 | 4.56% |
| 25 to 29 years | 800 | 5.56% |
| 30 to 34 years | 786 | 5.46% |
| 35 to 39 years | 691 | 4.80% |
| 40 to 44 years | 783 | 5.44% |
| 45 to 49 years | 1,013 | 7.04% |
| 50 to 54 years | 1,168 | 8.11% |
| 55 to 59 years | 1,082 | 7.51% |
| 60 to 64 years | 788 | 5.47% |
| 65 to 69 years | 616 | 4.28% |
| 70 to 74 years | 562 | 3.90% |
| 75 to 79 years | 625 | 4.34% |
| 80 to 84 years | 554 | 3.85% |
| 85 years and over | 580 | 4.03% |
Male Population in O'brien County
*Base on 2010 Data
| Male population | 7,166 | 49.77% |
| Under 5 years | 473 | 3.29% |
| 5 to 9 years | 518 | 3.60% |
| 10 to 14 years | 499 | 3.47% |
| 15 to 19 years | 483 | 3.35% |
| 20 to 24 years | 346 | 2.40% |
| 25 to 29 years | 425 | 2.95% |
| 30 to 34 years | 414 | 2.88% |
| 35 to 39 years | 362 | 2.51% |
| 40 to 44 years | 405 | 2.81% |
| 45 to 49 years | 486 | 3.38% |
| 50 to 54 years | 608 | 4.22% |
| 55 to 59 years | 544 | 3.78% |
| 60 to 64 years | 388 | 2.69% |
| 65 to 69 years | 300 | 2.08% |
| 70 to 74 years | 259 | 1.80% |
| 75 to 79 years | 259 | 1.80% |
| 80 to 84 years | 224 | 1.56% |
| 85 years and over | 173 | 1.20% |
Female Population in O'brien County
*Base on 2010 Data
| Female population | 7,232 | 50.23% |
| Under 5 years | 449 | 3.12% |
| 5 to 9 years | 419 | 2.91% |
| 10 to 14 years | 449 | 3.12% |
| 15 to 19 years | 404 | 2.81% |
| 20 to 24 years | 310 | 2.15% |
| 25 to 29 years | 375 | 2.60% |
| 30 to 34 years | 372 | 2.58% |
| 35 to 39 years | 329 | 2.29% |
| 40 to 44 years | 378 | 2.63% |
| 45 to 49 years | 527 | 3.66% |
| 50 to 54 years | 560 | 3.89% |
| 55 to 59 years | 538 | 3.74% |
| 60 to 64 years | 400 | 2.78% |
| 65 to 69 years | 316 | 2.19% |
| 70 to 74 years | 303 | 2.10% |
| 75 to 79 years | 366 | 2.54% |
| 80 to 84 years | 330 | 2.29% |
| 85 years and over | 407 | 2.83% |
Median Age in O'brien County
*Base on 2010 Data
| Both | 43.60% | |
| Male | 40.80% | |
| Female | 46.60% |
Race in O'brien County
*Base on 2010 Data
| Total | 14,398 | 100.00% |
| Population of one race | 14,284 | 99.21% |
| White | 13,829 | 96.05% |
| Black or African American | 67 | 0.47% |
| American Indian and Alaska Native | 18 | 0.13% |
| Asian | 82 | 0.57% |
| Asian Indian | 10 | 0.07% |
| Chinese | 17 | 0.12% |
| Filipino | 7 | 0.05% |
| Japanese | 1 | 0.01% |
| Korean | 13 | 0.09% |
| Vietnamese | 2 | 0.01% |
| Other Asian | 32 | 0.22% |
| Native Hawaiian and Other Pacific Islander | 1 | 0.01% |
| Native Hawaiian | 0 | 0.00% |
| Guamanian or Chamorro | 0 | 0.00% |
| Samoan | 1 | 0.01% |
| Other Pacific Islander | 0 | 0.00% |
| Some Other Race | 287 | 1.99% |
| Population of Two or More Races | 114 | 0.79% |
| White; American Indian and Alaska Native | 27 | 0.19% |
| White; Asian | 13 | 0.09% |
| White; Black or African American | 23 | 0.16% |
| White; Some Other Race | 29 | 0.20% |
The Population 16 Years in O'brien County
*Base on 2010 Data
| Total | 11,412 | 100.00% |
| Male | 5,581 | 48.90% |
| Female | 5,831 | 51.10% |
The Population 18 Years in O'brien County
*Base on 2010 Data
| Total | 11,005 | 100.00% |
| Male | 5,362 | 48.72% |
| Female | 5,643 | 51.28% |
The Population 21 Years in O'brien County
*Base on 2010 Data
| Total | 10,574 | 100.00% |
| Male | 5,115 | 48.37% |
| Female | 5,459 | 51.63% |
The Population 62 Years in O'brien County
*Base on 2010 Data
| Total | 3,395 | 100.00% |
| Male | 1,427 | 42.03% |
| Female | 1,968 | 57.97% |
The Population 65 Years in O'brien County
*Base on 2010 Data
| Total | 2,937 | 100.00% |
| Male | 1,215 | 41.37% |
| Female | 1,722 | 58.63% |
Race (total races tallied) in O'brien County
*Base on 2010 Data
| White alone or in combination with one or more other races | 13,937 | 95.95% |
| Black or African American alone or in combination with one or more other races | 94 | 0.65% |
| American Indian and Alaska Native alone or in combination with one or more other races | 49 | 0.34% |
| Asian alone or in combination with one or more other races | 109 | 0.75% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 14 | 0.10% |
| Some Other Race alone or in combination with one or more other races | 322 | 2.22% |
Hispanic or Latino by Specific Origin in O'brien County
*Base on 2010 Data
| Total | 14,398 | 100.00% |
| Hispanic or Latino (of any race) | 545 | 3.79% |
| Mexican | 452 | 3.14% |
| Puerto Rican | 13 | 0.09% |
| Cuban | 0 | 0.00% |
| Other Hispanic or Latino | 80 | 0.56% |
| Not Hispanic or Latino | 13,853 | 96.21% |
Hispanic or Latino and Race in O'brien County
*Base on 2010 Data
| Total | 14,398 | 100.00% |
| Hispanic or Latino | 545 | 3.79% |
| White alone | 224 | 1.56% |
| Black or African American alone | 11 | 0.08% |
| American Indian and Alaska Native alone | 2 | 0.01% |
| Asian alone | 0 | 0.00% |
| Native Hawaiian and Other Pacific Islander alone | 0 | 0.00% |
| Some Other Race alone | 281 | 1.95% |
| Two or More Races | 27 | 0.19% |
| Not Hispanic or Latino | 13,853 | 96.21% |
| White alone | 13,605 | 94.49% |
| Black or African American alone | 56 | 0.39% |
| American Indian and Alaska Native alone | 16 | 0.11% |
| Asian alone | 82 | 0.57% |
| Native Hawaiian and Other Pacific Islander alone | 1 | 0.01% |
| Some Other Race alone | 6 | 0.04% |
| Two or More Races | 87 | 0.60% |
Relationship in O'brien County
*Base on 2010 Data
| Total | 14,398 | 100.00% |
| In households | 14,032 | 97.46% |
| Householder | 6,069 | 42.15% |
| Spouse | 3,342 | 23.21% |
| Child | 3,822 | 26.55% |
| Own child under 18 years | 3,199 | 22.22% |
| Other relatives | 271 | 1.88% |
| Under 18 years | 114 | 0.79% |
| 65 years and over | 31 | 0.22% |
| Nonrelatives | 528 | 3.67% |
| Under 18 years | 78 | 0.54% |
| 65 years and over | 15 | 0.10% |
| Unmarried partner | 297 | 2.06% |
| In group quarters | 366 | 2.54% |
| Institutionalized population | 208 | 1.44% |
| Male | 78 | 0.54% |
| Female | 130 | 0.90% |
| Noninstitutionalized population | 158 | 1.10% |
| Male | 100 | 0.69% |
| Female | 58 | 0.40% |
Households by Type in O'brien County
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 6,069 | 100.00% |
| Family households (families) | 3,927 | 64.71% |
| With own children under 18 years | 1,578 | 26.00% |
| Husband-wife family | 3,342 | 55.07% |
| With own children under 18 years | 1,185 | 19.53% |
| Male householder, no wife present | 214 | 3.53% |
| With own children under 18 years | 143 | 2.36% |
| Female householder, no husband present | 371 | 6.11% |
| With own children under 18 years | 250 | 4.12% |
| Nonfamily households | 2,142 | 35.29% |
| Householder living alone | 1,909 | 31.45% |
| Male | 820 | 13.51% |
| 65 years and over | 240 | 3.95% |
| Female | 1,089 | 17.94% |
| 65 years and over | 762 | 12.56% |
Households with individuals under 18 years in O'brien County
*Base on 2010 Data
| Total | 1,671 | 27.53% |
Households with individuals under 65 years in O'brien County
*Base on 2010 Data
| Total | 2,007 | 33.07% |
Average Household Size in O'brien County
*Base on 2010 Data
| Average household size | 2 | % |
Average Family Size in O'brien County
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in O'brien County
*Base on 2010 Data
| Total | 6,649 | 100.00% |
| Occupied housing units | 6,069 | 91.28% |
| Vacant housing units | 580 | 8.72% |
| For rent | 147 | 2.21% |
| Rented, not occupied | 3 | 0.05% |
| For sale only | 85 | 1.28% |
| Sold, not occupied | 40 | 0.60% |
| For seasonal, recreational, or occasional use | 40 | 0.60% |
| All other vacants | 265 | 3.99% |
Homeowner Vacancy Rate in O'brien County
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 1.80% |
Rental Vacancy Rate in O'brien County
*Base on 2010 Data
| Rental vacancy rate (percent) | 9.00% |
Housing Tenure(Occupied housing units) in O'brien County
*Base on 2010 Data
| Total | 6,069 | 100.00% |
| Owner-occupied housing units | 4,594 | 75.70% |
| Renter-occupied housing units | 1,475 | 24.30% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in O'brien County
*Base on 2010 Data
| Owner-occupied housing units | 11,048 | 78.73% |
| Renter-occupied housing units | 2,984 | 21.27% |
Average Household Size of Occupied Housing Units by Tenure in O'brien County
*Base on 2010 Data
| Owner occupied | 2 | % |
| Renter occupied | 2 | % |