Hillsdale County is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 46,688. The county seat is Hillsdale.
According to the US Census Bureau, the county has a total area of 607 square miles (1,570 km), of which 598 square miles (1,550 km) is land and 8.9 square miles (23 km) (1.5%) is water.<ref”>”2010 Census Gazetteer Files”. US Census Bureau. August 22, 2012. Archived from the original on November 13, 2013. Retrieved September 25, 2014..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:”\”””\”””‘””‘”.mw-parser-output .citation .cs1-lock-free abackground:url(“//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png”)no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url(“//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png”)no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url(“//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png”)no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url(“//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png”)no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em</ref> Hillsdale is the only county in Michigan to have a land border with two other states – Ohio and Indiana. The headwaters of two St. Joseph Rivers rise in Hillsdale County: the St. Joseph River (Lake Michigan) and the St. Joseph River (Maumee River).
As of the 2000 United States Census, there were 46,527 people, 17,335 households, and 12,550 families residing in the county. The population density was 78 people per square mile (30/km²). There were 20,189 housing units at an average density of 34 per square mile (13/km²). The racial makeup of the county was 97.56% White, 0.43% Black or African American, 0.35% Native American, 0.33% Asian, 0.01% Pacific Islander, 0.34% from other races, and 0.98% from two or more races. 1.20% of the population were Hispanic or Latino of any race. 28.4% were of German, 28.2% English and 9.3% Irish ancestry, 97.0% spoke English, 1.2% Spanish and 1.2% German as their first language.
There were 17,335 households out of which 32.90% had children under the age of 18 living with them, 59.90% were married couples living together, 8.40% had a female householder with no husband present, and 27.60% were non-families. 22.90% of all households were made up of individuals and 9.30% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.05.
The county’s population contained 26.30% under the age of 18, 10.00% from 18 to 24, 26.80% from 25 to 44, 23.50% from 45 to 64, and 13.30% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 99.00 males. For every 100 females age 18 and over, there were 96.20 males.
The median income for a household in the county was $40,396, and the median income for a family was $45,895. Males had a median income of $35,349 versus $23,718 for females. The per capita income for the county was $18,255. About 5.20% of families and 8.20% of the population were below the poverty line, including 8.80% of those under age 18 and 8.60% of those age 65 or over.