Population by Age in Mchenry County
*Base on 2010 Data
| Total population | 308,760 | 100.00% |
| Under 5 years | 19,896 | 6.44% |
| 5 to 9 years | 23,408 | 7.58% |
| 10 to 14 years | 25,253 | 8.18% |
| 15 to 19 years | 23,605 | 7.65% |
| 20 to 24 years | 15,468 | 5.01% |
| 25 to 29 years | 16,563 | 5.36% |
| 30 to 34 years | 18,198 | 5.89% |
| 35 to 39 years | 21,582 | 6.99% |
| 40 to 44 years | 25,754 | 8.34% |
| 45 to 49 years | 27,700 | 8.97% |
| 50 to 54 years | 24,919 | 8.07% |
| 55 to 59 years | 19,574 | 6.34% |
| 60 to 64 years | 15,520 | 5.03% |
| 65 to 69 years | 11,307 | 3.66% |
| 70 to 74 years | 7,253 | 2.35% |
| 75 to 79 years | 5,222 | 1.69% |
| 80 to 84 years | 3,958 | 1.28% |
| 85 years and over | 3,580 | 1.16% |
Male Population in Mchenry County
*Base on 2010 Data
| Male population | 153,936 | 49.86% |
| Under 5 years | 10,152 | 3.29% |
| 5 to 9 years | 11,970 | 3.88% |
| 10 to 14 years | 12,924 | 4.19% |
| 15 to 19 years | 12,220 | 3.96% |
| 20 to 24 years | 8,202 | 2.66% |
| 25 to 29 years | 8,456 | 2.74% |
| 30 to 34 years | 9,070 | 2.94% |
| 35 to 39 years | 10,652 | 3.45% |
| 40 to 44 years | 12,645 | 4.10% |
| 45 to 49 years | 13,855 | 4.49% |
| 50 to 54 years | 12,451 | 4.03% |
| 55 to 59 years | 9,815 | 3.18% |
| 60 to 64 years | 7,622 | 2.47% |
| 65 to 69 years | 5,409 | 1.75% |
| 70 to 74 years | 3,414 | 1.11% |
| 75 to 79 years | 2,342 | 0.76% |
| 80 to 84 years | 1,621 | 0.53% |
| 85 years and over | 1,116 | 0.36% |
Female Population in Mchenry County
*Base on 2010 Data
| Female population | 154,824 | 50.14% |
| Under 5 years | 9,744 | 3.16% |
| 5 to 9 years | 11,438 | 3.70% |
| 10 to 14 years | 12,329 | 3.99% |
| 15 to 19 years | 11,385 | 3.69% |
| 20 to 24 years | 7,266 | 2.35% |
| 25 to 29 years | 8,107 | 2.63% |
| 30 to 34 years | 9,128 | 2.96% |
| 35 to 39 years | 10,930 | 3.54% |
| 40 to 44 years | 13,109 | 4.25% |
| 45 to 49 years | 13,845 | 4.48% |
| 50 to 54 years | 12,468 | 4.04% |
| 55 to 59 years | 9,759 | 3.16% |
| 60 to 64 years | 7,898 | 2.56% |
| 65 to 69 years | 5,898 | 1.91% |
| 70 to 74 years | 3,839 | 1.24% |
| 75 to 79 years | 2,880 | 0.93% |
| 80 to 84 years | 2,337 | 0.76% |
| 85 years and over | 2,464 | 0.80% |
Median Age in Mchenry County
*Base on 2010 Data
| Both | 38.00% | |
| Male | 37.00% | |
| Female | 38.80% |
Race in Mchenry County
*Base on 2010 Data
| Total | 308,760 | 100.00% |
| Population of one race | 303,560 | 98.32% |
| White | 278,257 | 90.12% |
| Black or African American | 3,283 | 1.06% |
| American Indian and Alaska Native | 939 | 0.30% |
| Asian | 7,807 | 2.53% |
| Asian Indian | 2,517 | 0.82% |
| Chinese | 888 | 0.29% |
| Filipino | 2,215 | 0.72% |
| Japanese | 219 | 0.07% |
| Korean | 674 | 0.22% |
| Vietnamese | 319 | 0.10% |
| Other Asian | 975 | 0.32% |
| Native Hawaiian and Other Pacific Islander | 80 | 0.03% |
| Native Hawaiian | 27 | 0.01% |
| Guamanian or Chamorro | 23 | 0.01% |
| Samoan | 7 | 0.00% |
| Other Pacific Islander | 23 | 0.01% |
| Some Other Race | 13,194 | 4.27% |
| Population of Two or More Races | 5,200 | 1.68% |
| White; American Indian and Alaska Native | 879 | 0.28% |
| White; Asian | 1,375 | 0.45% |
| White; Black or African American | 979 | 0.32% |
| White; Some Other Race | 1,230 | 0.40% |
The Population 16 Years in Mchenry County
*Base on 2010 Data
| Total | 234,909 | 100.00% |
| Male | 116,143 | 49.44% |
| Female | 118,766 | 50.56% |
The Population 18 Years in Mchenry County
*Base on 2010 Data
| Total | 224,585 | 100.00% |
| Male | 110,886 | 49.37% |
| Female | 113,699 | 50.63% |
The Population 21 Years in Mchenry County
*Base on 2010 Data
| Total | 213,369 | 100.00% |
| Male | 104,908 | 49.17% |
| Female | 108,461 | 50.83% |
The Population 62 Years in Mchenry County
*Base on 2010 Data
| Total | 40,174 | 100.00% |
| Male | 18,241 | 45.40% |
| Female | 21,933 | 54.60% |
The Population 65 Years in Mchenry County
*Base on 2010 Data
| Total | 31,320 | 100.00% |
| Male | 13,902 | 44.39% |
| Female | 17,418 | 55.61% |
Race (total races tallied) in Mchenry County
*Base on 2010 Data
| White alone or in combination with one or more other races | 283,049 | 90.07% |
| Black or African American alone or in combination with one or more other races | 4,579 | 1.46% |
| American Indian and Alaska Native alone or in combination with one or more other races | 2,095 | 0.67% |
| Asian alone or in combination with one or more other races | 9,552 | 3.04% |
| Native Hawaiian and Other Pacific Islander alone or in combination with one or more other races | 244 | 0.08% |
| Some Other Race alone or in combination with one or more other races | 14,734 | 4.69% |
Hispanic or Latino by Specific Origin in Mchenry County
*Base on 2010 Data
| Total | 308,760 | 100.00% |
| Hispanic or Latino (of any race) | 35,249 | 11.42% |
| Mexican | 28,796 | 9.33% |
| Puerto Rican | 2,156 | 0.70% |
| Cuban | 439 | 0.14% |
| Other Hispanic or Latino | 3,858 | 1.25% |
| Not Hispanic or Latino | 273,511 | 88.58% |
Hispanic or Latino and Race in Mchenry County
*Base on 2010 Data
| Total | 308,760 | 100.00% |
| Hispanic or Latino | 35,249 | 11.42% |
| White alone | 19,673 | 6.37% |
| Black or African American alone | 238 | 0.08% |
| American Indian and Alaska Native alone | 484 | 0.16% |
| Asian alone | 95 | 0.03% |
| Native Hawaiian and Other Pacific Islander alone | 12 | 0.00% |
| Some Other Race alone | 12,984 | 4.21% |
| Two or More Races | 1,763 | 0.57% |
| Not Hispanic or Latino | 273,511 | 88.58% |
| White alone | 258,584 | 83.75% |
| Black or African American alone | 3,045 | 0.99% |
| American Indian and Alaska Native alone | 455 | 0.15% |
| Asian alone | 7,712 | 2.50% |
| Native Hawaiian and Other Pacific Islander alone | 68 | 0.02% |
| Some Other Race alone | 210 | 0.07% |
| Two or More Races | 3,437 | 1.11% |
Relationship in Mchenry County
*Base on 2010 Data
| Total | 308,760 | 100.00% |
| In households | 307,113 | 99.47% |
| Householder | 109,199 | 35.37% |
| Spouse | 67,988 | 22.02% |
| Child | 103,852 | 33.64% |
| Own child under 18 years | 78,326 | 25.37% |
| Other relatives | 13,714 | 4.44% |
| Under 18 years | 4,719 | 1.53% |
| 65 years and over | 2,617 | 0.85% |
| Nonrelatives | 12,360 | 4.00% |
| Under 18 years | 1,082 | 0.35% |
| 65 years and over | 449 | 0.15% |
| Unmarried partner | 6,244 | 2.02% |
| In group quarters | 1,647 | 0.53% |
| Institutionalized population | 1,337 | 0.43% |
| Male | 716 | 0.23% |
| Female | 621 | 0.20% |
| Noninstitutionalized population | 310 | 0.10% |
| Male | 155 | 0.05% |
| Female | 155 | 0.05% |
Households by Type in Mchenry County
*Base on 2010 Data
| Subject | Number | Percent |
|---|---|---|
| Total | 109,199 | 100.00% |
| Family households (families) | 82,288 | 75.36% |
| With own children under 18 years | 41,070 | 37.61% |
| Husband-wife family | 67,988 | 62.26% |
| With own children under 18 years | 33,218 | 30.42% |
| Male householder, no wife present | 4,572 | 4.19% |
| With own children under 18 years | 2,271 | 2.08% |
| Female householder, no husband present | 9,728 | 8.91% |
| With own children under 18 years | 5,581 | 5.11% |
| Nonfamily households | 26,911 | 24.64% |
| Householder living alone | 21,620 | 19.80% |
| Male | 9,980 | 9.14% |
| 65 years and over | 1,998 | 1.83% |
| Female | 11,640 | 10.66% |
| 65 years and over | 5,491 | 5.03% |
Households with individuals under 18 years in Mchenry County
*Base on 2010 Data
| Total | 43,752 | 40.07% |
Households with individuals under 65 years in Mchenry County
*Base on 2010 Data
| Total | 22,442 | 20.55% |
Average Household Size in Mchenry County
*Base on 2010 Data
| Average household size | 3 | % |
Average Family Size in Mchenry County
*Base on 2010 Data
| Average family size | 3 | % |
Housing Occupancy(Total housing units) in Mchenry County
*Base on 2010 Data
| Total | 116,040 | 100.00% |
| Occupied housing units | 109,199 | 94.10% |
| Vacant housing units | 6,841 | 5.90% |
| For rent | 1,741 | 1.50% |
| Rented, not occupied | 109 | 0.09% |
| For sale only | 1,865 | 1.61% |
| Sold, not occupied | 302 | 0.26% |
| For seasonal, recreational, or occasional use | 1,092 | 0.94% |
| All other vacants | 1,732 | 1.49% |
Homeowner Vacancy Rate in Mchenry County
*Base on 2010 Data
| Homeowner vacancy rate (percent) | 2.00% |
Rental Vacancy Rate in Mchenry County
*Base on 2010 Data
| Rental vacancy rate (percent) | 8.60% |
Housing Tenure(Occupied housing units) in Mchenry County
*Base on 2010 Data
| Total | 109,199 | 100.00% |
| Owner-occupied housing units | 90,722 | 83.08% |
| Renter-occupied housing units | 18,477 | 16.92% |
Population in Occupied Housing Units by Tenure(Population in occupied housing units) in Mchenry County
*Base on 2010 Data
| Owner-occupied housing units | 259,669 | 84.55% |
| Renter-occupied housing units | 47,444 | 15.45% |
Average Household Size of Occupied Housing Units by Tenure in Mchenry County
*Base on 2010 Data
| Owner occupied | 3 | % |
| Renter occupied | 3 | % |