People QuickFacts Buffalo Grove Illinois Population, 2011 estimate 41,668 12,869,257 Population, 2010 (April 1) estimates base 41,496 12,830,632 Population, percent change, April 1, 2010 to July 1, 2011 0.4% 0.3% Population, 2010 41,496 12,830,632 Persons under 5 years, percent, 2010 4.8% 6.5% Persons under 18 years, percent, 2010 23.6% 24.4% Persons 65 years and over, percent, 2010 11.9% 12.5% Female persons, percent, 2010 51.6% 51.0%  White persons, percent, 2010 (a) 79.8% 71.5% Black persons, percent, 2010 (a) 1.0% 14.5% American Indian and Alaska Native persons, percent, 2010 (a) 0.2% 0.3% Asian persons, percent, 2010 (a) 16.0% 4.6% Native Hawaiian and Other Pacific Islander, percent, 2010 (a) Z 0.0% Persons reporting two or more races, percent, 2010 1.6% 2.3% Persons of Hispanic or Latino origin, percent, 2010 (b) 4.9% 15.8% White persons not Hispanic, percent, 2010 76.7% 63.7%  Living in same house 1 year & over, 2006-2010 91.3% 86.1% Foreign born persons, percent, 2006-2010 25.4% 13.6% Language other than English spoken at home, pct age 5+, 2006-2010 31.6% 21.7% High school graduates, percent of persons age 25+, 2006-2010 96.0% 86.2% Bachelor's degree or higher, pct of persons age 25+, 2006-2010 59.8% 30.3% Mean travel time to work (minutes), workers age 16+, 2006-2010 29.5 28.1  Homeownership rate, 2006-2010 83.4% 69.2% Housing units in multi-unit structures, percent, 2006-2010 30.6% 33.0% Median value of owner-occupied housing units, 2006-2010 $339,700 $202,500 Households, 2006-2010 16,350 4,769,951 Persons per household, 2006-2010 2.54 2.61 Per capita money income in past 12 months (2010 dollars) 2006-2010 $43,385 $28,782 Median household income 2006-2010 $87,054 $55,735 Persons below poverty level, percent, 2006-2010 3.3% 12.6%     Business QuickFacts Buffalo Grove Illinois Total number of firms, 2007 5,467 1,123,817 Black-owned firms, percent, 2007 S 9.5% American Indian- and Alaska Native-owned firms, percent, 2007 F 0.5% Asian-owned firms, percent, 2007 S 5.3% Native Hawaiian and Other Pacific Islander-owned firms, percent, 2007 F 0.1% Hispanic-owned firms, percent, 2007 2.0% 5.0% Women-owned firms, percent, 2007 S 30.5%  Manufacturers shipments, 2007 ($1000) 1,160,758 257,760,713 Merchant wholesaler sales, 2007 ($1000) 2,170,326 231,082,768 Retail sales, 2007 ($1000) 491,767 165,450,520 Retail sales per capita, 2007 $11,542 $12,947 Accommodation and food services sales, 2007 ($1000) 85,661 25,469,026     Geography QuickFacts Buffalo Grove Illinois Land area in square miles, 2010 9.50 55,518.93 Persons per square mile, 2010 4,368.0 231.1 FIPS Code 09447 17 Counties Cook County Lake County (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