Tumacacori is located at {{coord|31|33|40|N|111|2|52|W|type:city}} (31.561157, -111.047810).<ref name="GR1">{{cite web|url=https://www.census.gov/geographies/reference-files/time-series/geo/www/gazetteer/gazette-files.html|publisher=[[United States Census Bureau]]|accessdate=2011-04-23|date=2011-02-12|title=US Gazetteer files: 2010, 2000, and 1990|archive-url=https://web.archive.org/web/20020527061848/http://www.census.gov/geo/www/gazetteer/gazette.html|archive-date=27 May 2002|url-status=dead}}</ref>
According to the [[United States Census Bureau]], the Tumacacori-Carmen CDP has a total area of {{convert|5.1|km2|disp=flip}}, all of it land. The locale is in a valley cut by the [[Santa Cruz River (Arizona)|Santa Cruz River]].
==Demographics==
As of the [[census]]<ref name="GR2">{{cite web|url=http://factfinder.census.gov|archive-url=https://archive.today/20200212221153/http://factfinderwww.census.gov/main.html|url-status=dead|archive-date=2020-02-12|publisher=[[United States Census Bureau]]|accessdate=2008-01-31|title=AmericanU.S. Census FactFinderwebsite}}</ref> of 2000, there were 569 people, 223 households, and 152 families residing in the CDP. The [[population density]] was 91.6 people per square mile (35.4/km²). There were 252 housing units at an average density of 40.6/sq mi (15.7/km²). The racial makeup of the CDP was 76.98% [[Race (United States Census)|White]], 0.18% [[Race (United States Census)|Black]] or [[Race (United States Census)|African American]], 1.05% [[Race (United States Census)|Native American]], 1.58% [[Race (United States Census)|Asian]], 17.57% from [[Race (United States Census)|other races]], and 2.64% from two or more races. 58.00% of the population were [[Race (United States Census)|Hispanic]] or [[Race (United States Census)|Latino]] of any race.
There were 223 households out of which 26.5% had children under the age of 18 living with them, 52.9% were [[Marriage|married couples]] living together, 9.9% had a female householder with no husband present, and 31.8% were non-families. 27.8% of all households were made up of individuals and 9.9% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 3.13.