Navajo County, Arizona
Historic Navajo County Courthouse and Museum in Holbrook
Location within the U.S. state of Arizona
Arizona's location within the U.S.
|Founded||March 21, 1895|
|Named for||Navajo Nation|
|Largest city||Show Low|
|• Total||9,960 sq mi (25,800 km2)|
|• Land||9,950 sq mi (25,800 km2)|
|• Water||9.3 sq mi (24 km2) 0.09%%|
| • Estimate |
|• Density||11/sq mi (4.2/km2)|
|Time zone||UTC−7 ( Mountain)|
Navajo County was split from Apache County on March 21, 1895. The first county sheriff was Commodore Perry Owens, a legendary gunman who had previously served as the sheriff of Apache County. It was the location for many of the events of the Pleasant Valley War.
According to the U.S. Census Bureau, the county has a total area of 9,960 square miles (25,800 km2), of which 9,950 square miles (25,800 km2) is land and 9.3 square miles (24 km2) (0.09%) is water. 
- Apache County - east
- Graham County - south
- Gila County - southwest
- Coconino County - west
- San Juan County, Utah - north
Navajo County has 6,632.73 square miles (17,178.7 km2) of federally designated Indian reservation within its borders, the third most of any county in the United States (neighboring Apache County and Coconino County are first and second). In descending order of territory within the county, the reservations are the Navajo Nation, Hopi Indian Reservation, and Fort Apache Indian Reservation, all of which are partly located within Navajo County.
- Apache-Sitgreaves National Forest (part)
- Navajo National Monument
- Petrified Forest National Park (part)
|U.S. Decennial Census
1790–1960  1900–1990 
1990–2000  2010–2018 
As of the 2000 census, there were 97,470 people, 30,043 households, and 23,073 families living in the county. The population density was 10 people per square mile (4/km²). There were 47,413 housing units at an average density of 5 per square mile (2/km²). The racial makeup of the county was 47.74% Native American, 45.91% White, 0.88% Black or African American, 0.33% Asian, 0.05% Pacific Islander, 3.15% from other races, and 55.94% from two or more races. 8.22% of the population were Hispanic or Latino of any race. 24.77% reported speaking Navajo at home, 5.94% other Southern Athabaskan languages, 4.71% Spanish, and 3.23% Hopi. 
There were 30,043 households out of which 40.50% had children under the age of 18 living with them, 55.50% were married couples living together, 16.30% had a female householder with no husband present, and 23.20% were non-families. 19.90% of all households were made up of individuals and 7.20% had someone living alone who was 65 years of age or older. The average household size was 3.17 and the average family size was 3.68.
In the county, the population was spread out with 35.40% under the age of 18, 8.80% from 18 to 24, 25.30% from 25 to 44, 20.40% from 45 to 64, and 10.00% who were 65 years of age or older. The median age was 30 years. For every 100 females there were 98.70 males. For every 100 females age 18 and over, there were 97.20 males.
The median income for a household in the county was $28,569, and the median income for a family was $32,409. Males had a median income of $30,509 versus $21,621 for females. The per capita income for the county was $11,609. About 23.40% of families and 29.50% of the population were below the poverty line, including 36.60% of those under age 18 and 20.30% of those age 65 or over.
As of the 2010 census, there were 107,449 people, 35,658 households, and 25,923 families living in the county.  The population density was 10.8 inhabitants per square mile (4.2/km2). There were 56,938 housing units at an average density of 5.7 per square mile (2.2/km2).  The racial makeup of the county was 49.3% white, 43.4% American Indian, 0.9% black or African American, 0.5% Asian, 0.1% Pacific islander, 3.4% from other races, and 2.5% from two or more races. Those of Hispanic or Latino origin made up 10.8% of the population.  In terms of ancestry, 13.7% were German, 12.5% were English, 9.3% were Irish, and 2.3% were American. 
Of the 35,658 households, 39.2% had children under the age of 18 living with them, 49.1% were married couples living together, 17.1% had a female householder with no husband present, 27.3% were non-families, and 23.0% of all households were made up of individuals. The average household size was 2.95 and the average family size was 3.50. The median age was 34.7 years. 
The median income for a household in the county was $39,774 and the median income for a family was $45,906. Males had a median income of $41,516 versus $28,969 for females. The per capita income for the county was $16,745. About 19.1% of families and 24.4% of the population were below the poverty line, including 32.6% of those under age 18 and 12.4% of those age 65 or over. 
Navajo County leans towards the Republican Party. Although its Native American population makes up nearly half of the county, a demographic that politically favors those of the Democratic Party, the county has a strong The Church of Jesus Christ of Latter-day Saints presence (particularly in population centers such as Snowflake) that normally allows Republican candidates to carry the county by small margins. However, in the 2018 gubernatorial election, the county voted Republican over Democrat by a large margin (56.4%-41.5%).
School districts that serve the county include:
- Blue Ridge Unified School District
- Cedar Unified School District
- Heber-Overgaard Unified School District
- Holbrook Unified School District
- Joseph City Unified School District
- Kayenta Unified School District
- Piñon Unified School District
- Show Low Unified School District
- Snowflake Unified School District
- Whiteriver Unified School District
- Winslow Unified School District
The following public-use airports are located within the county: 
- Cibecue Airport (Z95) – Cibecue
- Holbrook Municipal Airport (P14) – Holbrook
- Kayenta Airport (0V7) – Kayenta
- Polacca Airport (P10) – Polacca
- Show Low Regional Airport (SOW) – Show Low
- Taylor Airport (TYL) – Taylor
- Whiteriver Airport (E24) – Whiteriver
- Winslow-Lindbergh Regional Airport (INW) – Winslow
- Clay Springs
- East Fork
- First Mesa
- Fort Apache
- Hard Rocks
- Indian Wells
- Joseph City
- Keams Canyon
- Kykotsmovi Village
- Lake of the Woods
- Low Mountain
- McNary (mostly in Apache County)
- North Fork
- Oljato-Monument Valley
- Pinetop Country Club
- Rainbow City
- Seba Dalkai
- Second Mesa
- Seven Mile
- Sun Valley
- Tees Toh
- Turkey Creek
- Wagon Wheel
- White Mountain Lake
- Winslow West (partially in Coconino County)
- Alchesay Flat, a named flat approximately 7 mi (11 km) north of Whiteriver along Arizona State Route 73.
† county seat
|Rank||City/Town/etc.||Population (2010 Census)||Municipal type||Incorporated|
|9||Lake of the Woods||4,094||CDP|
|12||White Mountain Lake||2,205||CDP|
|13||Pinetop Country Club||1,794||CDP|
|33||McNary (mostly in Apache County)||528||CDP|
|37||Winslow West (partially in Coconino County)||438||CDP|
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- Navajo County Public and Private Airports, Arizona: