| Population Over Time | Number | Rank in State | Percent of State | Indiana | | Yesterday (1990) | 39,884 | 31 | 0.7% | 5,544,156 | | Today (2008) | 38,057 | 38 | 0.6% | 6,376,792 | | Tomorrow (2025 proj.) | 38,068 | 43 | 0.6% | 6,887,793 | | Percent Change 1990 to 2000 | -1.6% | 90 |   | 9.7% | Sources: US Census Bureau; Indiana Business Research Center |
| Components of Population Change in 2008 | Number | Rank in State | Percent of State | Indiana | | Net Domestic Migration 2007 to 2008 | 1 | 29 |   | -1,979 | | Net International Migration 2007 to 2008 | 28 | 32 |   | 7,562 | | Natural Increase (births minus deaths) | 23 | 75 | 0.1% | 34,321 | Source: US Census Bureau |
| Population Estimates by Age in 2008 | Number | Rank in State | Pct Dist. in County | Pct Dist. in State | | Preschool (0 to 4) | 2,323 | 43 | 6.1% | 6.9% | | School Age (5 to 17) | 5,713 | 50 | 15.0% | 17.9% | | College Age (18 to 24) | 5,000 | 27 | 13.1% | 9.5% | | Young Adult (25 to 44) | 9,020 | 45 | 23.7% | 27.0% | | Older Adult (45 to 64) | 9,693 | 42 | 25.5% | 25.8% | | Older (65 plus) | 6,308 | 31 | 16.6% | 12.8% | | Median Age | 38.4 |   |   | Median Age = 36.7 | Sources: US Census Bureau; Indiana Business Research Center |
| Population Estimates by Race or Hispanic Origin in 2008 | Number | Rank in State | Pct Dist. in County | Pct Dist. in State | | American Indian or Alaska Native Alone | 90 | 44 | 0.2% | 0.3% | | Asian Alone | 369 | 30 | 1.0% | 1.4% | | Black Alone | 804 | 28 | 2.1% | 9.1% | | Native Hawaiian and Other Pac. Isl. Alone | 18 | 31 | 0.0% | 0.0% | | White Alone | 36,468 | 41 | 95.8% | 88.0% | | Two or More Race Groups | 308 | 38 | 0.8% | 1.2% | | Hispanic or Latino(can be of any race) |   |   |   |   | | Non-Hispanic or Latino | 37,638 | 37 | 98.9% | 94.8% | | Hispanic or Latino | 419 | 60 | 1.1% | 5.2% | Source: US Census Bureau |
| Household Types | Number | Rank in State | Pct Dist. in County | Pct Dist. in State | | Households in 2000 (Includes detail not shown below) | 15,552 | 36 | 100.0% | 100.0% | |    Married With Children | 3,364 | 45 | 21.6% | 23.8% | |    Married Without Children | 4,655 | 39 | 29.9% | 29.8% | |    Single Parents | 1,295 | 32 | 8.3% | 9.1% | |    Living Alone | 4,621 | 26 | 29.7% | 25.9% | Source: US Census Bureau |
| Housing | Number | Rank in State | Pct Dist. in County | Pct Dist. in State | | Total Housing Units in 2008 (estimate) | 17,637 | 36 | 100.0% | 100.0% | | Total Housing Units in 2000 (includes vacant units) | 17,305 | 35 | 100.0% | 100.0% |    Owner Occupied (Pct. distribution based on all housing units)    Median Value (2000) | 10,730 $63,600 | 40 86 | 62.0% -- | 65.9% -- |    Renter Occupied (Pct. distribution based on all housing units)    Median Rent (2000) | 4,822 $403 | 25 77 | 27.9% -- | 26.3% -- | Source: US Census Bureau |
| Education | Number | Rank in State | Percent of State | Indiana | | School Enrollment (2006/2007 Total Reported) | 5,525 | 49 | 0.5% | 1,154,826 | |    Public | 5,413 | 48 | 0.5% | 1,045,702 | |    Private | 112 | 93 | 0.1% | 109,124 | | High School Graduates (2006/2007) | 354 | 37 | 0.6% | 63,339 | |    Going on to Higher Education | 293 | 36 | 0.6% | 52,698 | |    4-year | 70 | 62 | 0.2% | 38,566 | |    2-year | 219 | 10 | 2.2% | 9,783 | |    Voc/tech. | 4 | 81 | 0.1% | 4,349 | | Adults (25+ in 2000 Census) | 24,865 | 38 | 0.6% | 3,893,278 | |    with High School diploma or higher | 81.7% | 34 |   | 82.1% | |    with B.A. or higher degree | 14.4% | 30 |   | 19.4% | Sources: Indiana Department of Education; US Census Bureau Notes: 1) Private enrollment includes home schools. 2) County rankings for high-school graduates continuing to higher education are subject to revision. |
| Income and Poverty | Number | Rank in State | Percent of State | Indiana | | Per Capita Personal Income (annual) in 2007 | $30,122 | 35 | 90.7% | $33,215 | | Median Household Income in 2007 | $40,042 | 80 | 84.4% | $47,422 | | Poverty Rate in 2007 | 17.1% | 5 | 139.0% | 12.3% | |    Poverty Rate among Children under 18 | 24.4% | 4 | 142.7% | 17.1% | | Welfare (TANF) Monthly Average Families in 2008 | 249 | 22 | 0.7% | 36,678 | | Food Stamp Recipients in 2008 | 4,899 | 24 | 0.8% | 644,281 | | Free and Reduced Fee Lunch Recipients in 2009 | 2,360 | 41 | 0.5% | 436,945 | Sources: U.S. Bureau of Economic Analysis; US Census Bureau; Indiana Family Social Services Administration; Indiana Department of Education |
| Health and Vital Statistics in 2005 | Number | Rank in State | Percent of State | Indiana | | Births | 471 | 44 | 0.5% | 87,088 | |    Births to Teens | 55 | 42 | 0.6% | 9,604 | | Deaths | 457 | 28 | 0.8% | 55,623 | Source: Indiana State Department of Health |
| Labor Force in 2008 | Number | Rank in State | Percent of State | Indiana | | Total Resident Labor Force | 19,855 | 38 | 0.6% | 3,230,367 | | Employed | 18,840 | 38 | 0.6% | 3,039,795 | | Unemployed | 1,015 | 48 | 0.5% | 190,572 | | Unemployment Rate | 5.1 | 72 | 86.4% | 5.9 | | September 2009 Unemployment Rate | 6.6 | 88 | 71.7% | 9.2 | Source: Bureau of Labor Statistics; Indiana Department of Workforce Development |
| Employment and Earnings by Industry in 2007 (NAICS) | Employment | Pct Dist. in County | Earnings ($000) | Pct Dist. In County | Avg. Earnings Per Job | | Total by place of work | 21,811 | 100.0% | $772,856 | 100.0% | $35,434 | | Wage and Salary | 18,410 | 84.4% | $516,179 | 66.8% | $28,038 | | Farm Proprietors | 568 | 2.6% | $11,453 | 1.5% | $20,164 | | Nonfarm Proprietors | 2,833 | 13.0% | $107,678 | 13.9% | $38,008 | | Farm | 762 | 3.5% | $19,517 | 2.5% | $25,613 | | Nonfarm | 21,049 | 96.5% | $753,339 | 97.5% | $35,790 | | Private | 15,756 | 72.2% | $520,182 | 67.3% | $33,015 | | Accommodation, Food Serv. | 1,540 | 7.1% | $18,707 | 2.4% | $12,147 | | Arts, Ent., Recreation | 123 | 0.6% | $809 | 0.1% | $6,577 | | Construction | 763 | 3.5% | $22,499 | 2.9% | $29,488 | | Health Care, Social Serv. | 2,388 | 10.9% | $77,709 | 10.1% | $32,541 | | Information | 208 | 1.0% | $6,824 | 0.9% | $32,808 | | Manufacturing | 2,092 | 9.6% | $90,727 | 11.7% | $43,369 | | Professional, Tech. Serv. | 524 | 2.4% | $27,717 | 3.6% | $52,895 | | Retail Trade | 2,409 | 11.0% | $54,428 | 7.0% | $22,594 | | Trans., Warehousing | 903 | 4.1% | $40,627 | 5.3% | $44,991 | | Wholesale Trade | 957 | 4.4% | $37,968 | 4.9% | $39,674 | | Other Private (not above) | 3,849 | 17.6% | $142,167 | 18.4% | $36,936 | | Government | 5,293 | 24.3% | $233,157 | 30.2% | $44,050 | Source: US Bureau of Economic Analysis |
| Residential Building Permits in 2008 | Units | Pct Dist. in County | Pct Dist. in State | Cost ($000) | State Cost ($000) | | Total Permits Filed | 41 | 100.0% | 100.0% | $6,281 | $2,470,264 | |    Single Family | 39 | 95.1% | 70.8% | $6,084 | $2,136,514 | |    Two Family | 2 | 4.9% | 1.9% | $197 | $28,170 | |    Three & Four Family | 0 | 0.0% | 1.2% | $0 | $18,059 | |    Five families and More | 0 | 0.0% | 26.0% | $0 | $287,521 | Source: US Census Bureau (Greene County totals are not included as it does not currently issue building permits.) Note: Detail cost may not sum to total due to rounding. |
| Commuting Patterns - Top 5 in 2007 | | Into Knox FROM | Number | Percent | Out of Knox TO | Number | Percent | | All Areas | 3,560 | 14.0% | All Areas | 2,664 | 10.9% | | Illinois | 1,450 | 5.7% | Gibson County | 667 | 2.7% | | Daviess County | 468 | 1.8% | Daviess County | 403 | 1.6% | | Sullivan County | 320 | 1.3% | Illinois | 333 | 1.4% | | Gibson County | 277 | 1.1% | Sullivan County | 202 | 0.8% | | Greene County | 259 | 1.0% | Pike County | 185 | 0.8% | Source: Indiana Department of Revenue |