People QuickFacts Marshall County Iowa Population, 2012 estimate 40,857 3,074,186 Population, 2010 (April 1) estimates base 40,648 3,046,857 Population, percent change, April 1, 2010 to July 1, 2012 0.5% 0.9% Population, 2010 40,648 3,046,355 Persons under 5 years, percent, 2011 7.1% 6.5% Persons under 18 years, percent, 2011 25.4% 23.7% Persons 65 years and over, percent, 2011 16.3% 14.9% Female persons, percent, 2011 49.7% 50.4%  White persons, percent, 2011 (a) 94.2% 93.0% Black persons, percent, 2011 (a) 1.9% 3.1% American Indian and Alaska Native persons, percent, 2011 (a) 0.7% 0.5% Asian persons, percent, 2011 (a) 1.6% 1.9% Native Hawaiian and Other Pacific Islander persons, percent, 2011 (a) 0.2% 0.1% Persons reporting two or more races, percent, 2011 1.4% 1.5% Persons of Hispanic or Latino Origin, percent, 2011 (b) 18.0% 5.2% White persons not Hispanic, percent, 2011 77.2% 88.4%  Living in same house 1 year & over, percent, 2007-2011 86.5% 84.3% Foreign born persons, percent, 2007-2011 10.2% 4.2% Language other than English spoken at home, percent age 5+, 2007-2011 17.1% 7.0% High school graduate or higher, percent of persons age 25+, 2007-2011 84.5% 90.3% Bachelor's degree or higher, percent of persons age 25+, 2007-2011 18.7% 24.9% Veterans, 2007-2011 3,880 239,229 Mean travel time to work (minutes), workers age 16+, 2007-2011 16.9 18.6  Housing units, 2011 16,766 1,340,529 Homeownership rate, 2007-2011 74.0% 73.0% Housing units in multi-unit structures, percent, 2007-2011 16.7% 18.5% Median value of owner-occupied housing units, 2007-2011 $102,700 $121,300 Households, 2007-2011 15,519 1,219,137 Persons per household, 2007-2011 2.53 2.41 Per capita money income in the past 12 months (2011 dollars), 2007-2011 $23,085 $26,110 Median household income, 2007-2011 $47,691 $50,451 Persons below poverty level, percent, 2007-2011 13.5% 11.9%     Business QuickFacts Marshall County Iowa Private nonfarm establishments, 2010 832 80,801 Private nonfarm employment, 2010 14,874 1,253,095 Private nonfarm employment, percent change, 2000-2010 -4.1 -0.9 Nonemployer establishments, 2010 2,056 201,448  Total number of firms, 2007 2,532 259,931 Black-owned firms, percent, 2007 F 0.8% American Indian- and Alaska Native-owned firms, percent, 2007 F 0.2% Asian-owned firms, percent, 2007 F 1.1% Native Hawaiian and Other Pacific Islander-owned firms, percent, 2007 F 0.1% Hispanic-owned firms, percent, 2007 F 0.9% Women-owned firms, percent, 2007 28.8% 25.5%  Manufacturers shipments, 2007 ($1000) 1,848,040 97,592,051 Merchant wholesaler sales, 2007 ($1000) 298,112 41,068,338 Retail sales, 2007 ($1000) 407,694 39,234,649 Retail sales per capita, 2007 $10,434 $13,172 Accommodation and food services sales, 2007 ($1000) 40,400 4,737,719 Building permits, 2011 18 7,526     Geography QuickFacts Marshall County Iowa Land area in square miles, 2010 572.50 55,857.13 Persons per square mile, 2010 71.0 54.5 FIPS Code 127 19 Metropolitan or Micropolitan Statistical Area Marshalltown, IA Micro Area   (a) Includes persons reporting only one race. (b) Hispanics may be of any race, so also are included in applicable race categories. FN: Footnote on this item for this area in place of data NA: Not available D: Suppressed to avoid disclosure of confidential information X: Not applicable S: Suppressed; does not meet publication standards Z: Value greater than zero but less than half unit of measure shown F: Fewer than 100 firms Source: US Census Bureau State & County QuickFacts