People QuickFacts San Marcos Texas Population, 2011 estimate 46,685 25,674,681 Population, 2010 (April 1) estimates base 44,894 25,145,561 Population, percent change, April 1, 2010 to July 1, 2011 4.0% 2.1% Population, 2010 44,894 25,145,561 Persons under 5 years, percent, 2010 4.4% 7.7% Persons under 18 years, percent, 2010 14.2% 27.3% Persons 65 years and over, percent, 2010 6.7% 10.3% Female persons, percent, 2010 50.3% 50.4%  White persons, percent, 2010 (a) 78.5% 70.4% Black persons, percent, 2010 (a) 5.5% 11.8% American Indian and Alaska Native persons, percent, 2010 (a) 0.9% 0.7% Asian persons, percent, 2010 (a) 1.6% 3.8% Native Hawaiian and Other Pacific Islander, percent, 2010 (a) 0.1% 0.1% Persons reporting two or more races, percent, 2010 3.1% 2.7% Persons of Hispanic or Latino origin, percent, 2010 (b) 37.8% 37.6% White persons not Hispanic, percent, 2010 53.7% 45.3%  Living in same house 1 year & over, 2006-2010 54.9% 81.5% Foreign born persons, percent, 2006-2010 5.7% 16.1% Language other than English spoken at home, pct age 5+, 2006-2010 24.5% 34.2% High school graduates, percent of persons age 25+, 2006-2010 83.3% 80.0% Bachelor's degree or higher, pct of persons age 25+, 2006-2010 29.8% 25.8% Mean travel time to work (minutes), workers age 16+, 2006-2010 21.4 24.8  Homeownership rate, 2006-2010 27.4% 64.8% Housing units in multi-unit structures, percent, 2006-2010 61.9% 24.1% Median value of owner-occupied housing units, 2006-2010 $121,700 $123,500 Households, 2006-2010 15,861 8,539,206 Persons per household, 2006-2010 2.27 2.78 Per capita money income in past 12 months (2010 dollars) 2006-2010 $15,021 $24,870 Median household income 2006-2010 $26,734 $49,646 Persons below poverty level, percent, 2006-2010 36.9% 16.8%     Business QuickFacts San Marcos Texas Total number of firms, 2007 3,071 2,164,852 Black-owned firms, percent, 2007 2.3% 7.1% American Indian- and Alaska Native-owned firms, percent, 2007 F 0.9% 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 21.1% 20.7% Women-owned firms, percent, 2007 18.9% 28.2%  Manufacturers shipments, 2007 ($1000) 532,409 593,541,502 Merchant wholesaler sales, 2007 ($1000) 208,838 424,238,194 Retail sales, 2007 ($1000) 1,331,784 311,334,781 Retail sales per capita, 2007 $26,356 $13,061 Accommodation and food services sales, 2007 ($1000) 158,694 42,054,592     Geography QuickFacts San Marcos Texas Land area in square miles, 2010 30.22 261,231.71 Persons per square mile, 2010 1,485.6 96.3 FIPS Code 65600 48 Counties Caldwell County Guadalupe County Hays 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