| SENECA Resident total population estimate (July 1) 2009 | 56152 |
| SENECA Resident total population estimates base (April 1) 2000 | 58683 |
| SENECA Resident total population estimate percent change - April 1 2000 to July 1 2009 | -4.3 |
| SENECA Resident total population estimate net change - April 1 2000 to July 1 2009 | -2531 |
| SENECA Resident population (April 1) 2000 (complete count) | 58683 |
| SENECA Resident population under 5 years (July 1 - estimate) 2008 | 3580 |
| SENECA Resident population under 5 years percent (July 1 - estimate) 2008 | 6.3 |
| SENECA Resident population under 18 years (July 1 - estimate) 2008 | 13034 |
| SENECA Resident population under 18 years percent (July 1 - estimate) 2008 | 23.1 |
| SENECA Resident population 65 years and over percent (July 1 - estimate) 2008 | 14.3 |
| SENECA Resident population 65 years and over (July 1 - estimate) 2008 | 8049 |
| SENECA Resident population: total females percent (July 1 - estimate) 2008 | 50.2 |
| SENECA Resident population: White alone (July 1 - estimate) 2008 | 54136 |
| SENECA Resident population: Black alone (July 1 - estimate) 2008 | 1188 |
| SENECA Resident population: American Indian and Alaska Native alone (July 1 - estimate) 2008 | 142 |
| SENECA Resident population: Asian alone (July 1 - estimate) 2008 | 312 |
| SENECA Resident population: Native Hawaiian and Other Pacific Islander alone (July 1 - estimate) 2008 | 5 |
| SENECA Resident population: Two or more races (July 1 - estimate) 2008 | 678 |
| SENECA Resident population: Hispanic or Latino Origin (July 1 - estimate) 2008 | 2341 |
| SENECA Resident population: Not Hispanic White alone (July 1 - estimate) 2008 | 51998 |
| SENECA Resident population: White alone percent (July 1 - estimate) 2008 | 95.9 |
| SENECA Resident population: Black alone percent (July 1 - estimate) 2008 | 2.1 |
| SENECA Resident population: American Indian and Alaska Native alone percent (July 1 - estimate) 2008 | 0.3 |
| SENECA Resident population: Asian alone percent (July 1 - estimate) 2008 | 0.6 |
| SENECA Resident population: Native Hawaiian and Other Pacific Islander alone percent (July 1 - estimate) 2008 | 0 |
| SENECA Resident population: Two or more races percent (July 1 - estimate) 2008 | 1.2 |
| SENECA Resident population: Hispanic or Latino Origin percent (July 1 - estimate) 2008 | 4.1 |
| SENECA Resident population: Not Hispanic White alone percent (July 1 - estimate) 2008 | 92.1 |
| SENECA Births 2006 | 717 |
| SENECA Deaths 2006 | 587 |
| SENECA Infant deaths under one year 2006 | 5 |
| SENECA Population 5 years and over by residence in 1995 - percent in same house 2000 (sample) | 62.6 |
| SENECA Percent foreign born population 2000 (sample) | 1.2 |
| SENECA Population 5 years and over percent speaking language other than English at home 2000 (sample) | 3.8 |
| SENECA Educational attainment - persons 25 years and over - percent high school graduate or higher 2000 | 83.1 |
| SENECA Educational attainment - persons 25 years and over - percent bachelors degree or higher 2000 | 12.5 |
| SENECA Civilian noninstitutionalized population 5 years and over with a disability 2000 (sample) | 9418 |
| SENECA Average travel time to work for workers 16 years and over not working at home 2000 | 20.5 |
| SENECA Housing unit estimates as of July 1 2008 | 24345 |
| SENECA Housing unit estimates - net change April 1 2000 (base) to July 1 2008 | 653 |
| SENECA Housing unit estimates - percent change April 1 2000 (base) to July 1 2008 | 2.8 |
| SENECA Owner-occupied housing units - percent of total occupied housing units 2000 (complete count) | 75.1 |
| SENECA Median value of specified owner-occupied housing units 2000 (sample) | 81300 |
| SENECA Housing units by units in structure - multiple units 2000 (sample) | 14.8 |
| SENECA Households 2000 (complete count) | 22292 |
| SENECA Persons per household 2000 (complete count) | 2.56 |
| SENECA Per capita income in 1999 | 17027 |
| SENECA Median household income 2008 | 44529 |
| SENECA People of all ages in poverty - percent 2008 | 11.1 |
| SENECA Personal income 2007 | 1587 |
| SENECA Per capita personal income 2007 | 27987 |
| SENECA Civilian labor force 2008 | 30743 |
| SENECA Civilian labor force unemployment 2008 | 2158 |
| SENECA Civilian labor force unemployment rate 2008 | 7 |
| SENECA Employment in all industries (NAICS no code) 2007 | 27980 |
| SENECA Employment in all industries net change 2000 - 2007 | -1204 |
| SENECA Employment in government (NAICS 92) 2007 | 3284 |
| SENECA Earnings in all industries (NAICS no code) 2007 | 931703 |
| SENECA Earnings in all industries (NAICS no code) average earnings per job 2007 | 33299 |
| SENECA Private nonfarm establishments 2007 | 1282 |
| SENECA Private nonfarm employment for pay period including March 12 2007 | 19601 |
| SENECA Private nonfarm employment for pay period including March 12 2006 percent change 2000-2007 | -8.5 |
| SENECA Nonemployer: total (NAICS 00) - establishments 2007 | 2922 |
| SENECA Accommodation and Food Services: total (NAICS 72) - sales of establishments with payroll 2002 | 45223 |
| SENECA Total number of firms 2002 | 3922 |
| SENECA Total Black-owned firms percent 2002 | 0 |
| SENECA Total American Indian-and Alaska Native-owned firms percent 2002 | 0 |
| SENECA Total Asian-owned firms percent 2002 | 0 |
| SENECA Total Hispanic-owned firms percent 2002 | 0 |
| SENECA Total Native Hawaiian-and Other Pacific Islander-owned firms percent 2002 | 0 |
| SENECA Total women-owned firms percent 2002 | 19.9 |
| SENECA Manufacturing: total (NAICS 31-33) - value of shipments 2002 | 1.09657e+06 |
| SENECA Wholesale trade: total (NAICS 42) - sales of establishments with payroll 2002 | 0 |
| SENECA Retail trade: total (NAICS 44-45) - sales of establishments with payroll 2002 | 450968 |
| SENECA Retail trade: total (NAICS 44-45) - sales of establishments with payroll per capita 2002 | 7776 |
| SENECA New private housing units authorized by building permits - total 2008 (20000-place universe) | 33 |
| SENECA Valuation of new private housing units authorized by building permits 2008 (20000-place universe) | 4721 |
| SENECA Land in farms (NAICS) 2007 (acres) (adjusted) | 269371 |
| SENECA Federal Government expenditure - total FY 2008 | 352172 |
| SENECA Federal Government expenditure per capita FY 2008 | 6237 |
| SENECA Land area in square miles 2000 | 550.59 |
| SENECA Population per square mile 2000 | 107 |