2010

Whereas according to the 2010 U.S. Census Bureau:

• 15.2% White
  White American
  White Americans are people of the United States who are considered or consider themselves White. The United States Census Bureau defines White people as those "having origins in any of the original peoples of Europe, the Middle East, or North Africa...
  
  
• 0.5% Black
  African American
  African Americans are citizens or residents of the United States who have at least partial ancestry from any of the native populations of Sub-Saharan Africa and are the direct descendants of enslaved Africans within the boundaries of the present United States...
  
  
• 75.5% Native American
  Native Americans in the United States
  Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii. They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as...
  
  
• 0.8% Asian
  Asian American
  Asian Americans are Americans of Asian descent. The U.S. Census Bureau definition of Asians as "Asian” refers to a person having origins in any of the original peoples of the Far East, Southeast Asia, or the Indian subcontinent, including, for example, Cambodia, China, India, Indonesia, Japan,...
  
  
• 0.0% Native Hawaiian or Pacific Islander
  Pacific Islander American
  Pacific Islander Americans, also known as Oceanian Americans, are residents of the United States with original ancestry from Oceania. They represent the smallest racial group counted in the United States census of 2000. They numbered 874,000 people or 0.3 percent of the United States population...
  
  
• 3.1% Two or more races
  Multiracial American
  Multiracial Americans, US residents who identify themselves as of "two or more races", were numbered at around 9 million, or 2.9% of the population, in the census of 2010. However there is considerable evidence that the real number is far higher. Prior to the mid-20th century many people hid their...
  
  
• 4.6% Other races
  Race (United States Census)
  Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...
  
  
• 13.3% Hispanic or Latino
  Hispanic and Latino Americans
  Hispanic or Latino Americans are Americans with origins in the Hispanic countries of Latin America or in Spain, and in general all persons in the United States who self-identify as Hispanic or Latino.1990 Census of Population and Housing: A self-designated classification for people whose origins...
  
   (of any race)

2000

As of the census

Census

A census is the procedure of systematically acquiring and recording information about the members of a given population. It is a regularly occurring and official count of a particular population. The term is used mostly in connection with national population and housing censuses; other common...

 of 2000, there were 74,798 people, 21,476 households, and 16,686 families residing in the county. The population density

Population density

Population density is a measurement of population per unit area or unit volume. It is frequently applied to living organisms, and particularly to humans...

 was 14 people per square mile (5/km²). There were 26,718 housing units at an average density of 5 per square mile (2/km²). The racial makeup of the county was 74.72% Native American

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 16.39% White

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 0.46% Asian

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 0.40% Black

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

 or African American

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 0.04% Pacific Islander

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, 5.47% from other races

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, and 2.52% from two or more races. 12.40% of the population were Hispanic

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

 or Latino

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

 of any race.

There were 21,476 households out of which 46.00% had children under the age of 18 living with them, 47.70% were married couples

Marriage

Marriage is a social union or legal contract between people that creates kinship. It is an institution in which interpersonal relationships, usually intimate and sexual, are acknowledged in a variety of ways, depending on the culture or subculture in which it is found...

 living together, 22.70% had a female householder with no husband present, and 22.30% were non-families. 19.50% of all households were made up of individuals and 5.30% had someone living alone who was 65 years of age or older. The average household size was 3.44 and the average family size was 3.99.

In the county the population was spread out with 38.00% under the age of 18, 9.70% from 18 to 24, 27.80% from 25 to 44, 17.60% from 45 to 64, and 6.90% who were 65 years of age or older. The median age was 27 years. For every 100 females there were 93.50 males. For every 100 females age 18 and over, there were 89.30 males.

The median income for a household in the county was $25,005, and the median income for a family was $26,806. Males had a median income of $26,963 versus $21,014 for females. The per capita income

Per capita income

Per capita income or income per person is a measure of mean income within an economic aggregate, such as a country or city. It is calculated by taking a measure of all sources of income in the aggregate and dividing it by the total population...

 for the county was $9,872. About 31.90% of families and 36.10% of the population were below the poverty line, including 42.30% of those under age 18 and 31.50% of those age 65 or over. The county's per-capita income

Per capita income

Per capita income or income per person is a measure of mean income within an economic aggregate, such as a country or city. It is calculated by taking a measure of all sources of income in the aggregate and dividing it by the total population...

 makes it one of the poorest counties in the United States.

McKinley County is one of only 38 county-level census divisions of the United States where the most spoken language is not English and one of only 3 where it is neither English nor Spanish. 45.75% of the population speak Navajo

Navajo language

Navajo or Navaho is an Athabaskan language spoken in the southwestern United States. It is geographically and linguistically one of the Southern Athabaskan languages .Navajo has more speakers than any other Native American language north of the...

 at home, followed by English at 38.87%, Zuñi

Zuni language

Zuni is a language of the Zuni people, indigenous to western New Mexico and eastern Arizona in the United States. It is spoken by around 9,500 people worldwide, especially in the vicinity of Zuni Pueblo, New Mexico, and much smaller numbers in parts of Arizona.Unlike most indigenous languages in...

 at 9.03%, and Spanish at 5.72%.

Census-designated places

• Black Rock
  Black Rock, New Mexico
  Black Rock is a census-designated place in McKinley County, New Mexico, United States. The population was 1,252 at the 2000 census.-Geography:Black Rock is located at ....
  
  
• Brimhall Nizhoni
  Brimhall Nizhoni, New Mexico
  Brimhall Nizhoni is a census-designated place in McKinley County, New Mexico, United States. The population was 373 at the 2000 census.-Geography:Brimhall Nizhoni is located at ....
  
  
• Church Rock
  Church Rock, New Mexico
  Church Rock is a census-designated place in McKinley County, New Mexico, United States. It is within the Navajo Nation. The population was 1,077 at the 2000 census.-Navajo Nation government:-Geography:...
  
  
• Crownpoint
  Crownpoint, New Mexico
  Crownpoint is a census-designated place in McKinley County, New Mexico, United States. The population was 2,630 at the 2000 census.-Geography:Crownpoint is located at ....
  
  
• Crystal
  Crystal, New Mexico
  Crystal is a census-designated place in McKinley and San Juan counties in the U.S. state of New Mexico. The population was 347 at the 2000 census....
  
  
• Nakaibito
  Nakaibito, New Mexico
  Nakaibito is a census-designated place in McKinley County, New Mexico, United States. The population was 455 at the 2000 census.-Geography:Nakaibito is located at ....
  
  
• Navajo
  Navajo, New Mexico
  Navajo is a census-designated place in McKinley County, New Mexico, United States. The population was 2,097 at the 2000 census. Navajo is the most Navajo town in the United States, with 95.04% of residents having full or partial Navajo ancestry....
  
  
• Pueblo Pintado
  Pueblo Pintado, New Mexico
  Pueblo Pintado is a census-designated place in McKinley County, New Mexico, United States. The population was 247 at the 2000 census.-Geography:Pueblo Pintado is located at ....
  
  
• Ramah
  Ramah, New Mexico
  Ramah is a census-designated place in McKinley County, New Mexico, United States. The population was 407 at the 2000 census.-Geography:Ramah is located at...
  
  
• Rock Springs
  Rock Springs, New Mexico
  Rock Springs is a census-designated place in McKinley County, New Mexico, United States. The population was 558 at the 2000 census.-Geography:Rock Springs is located at ....
  
  
• Thoreau
  Thoreau, New Mexico
  Thoreau is a census-designated place in McKinley County, New Mexico, United States. The population was 1,863 at the 2000 census.Practically all residents pronounce the town's name like "thuh-ROO" and definitely not like "thorough" or "throw." The town is also not named for Henry David Thoreau,...
  
  
• Tohatchi
  Tohatchi, New Mexico
  Tohatchi is a census-designated place in McKinley County, New Mexico, United States. The population was 1,037 at the 2000 census. Tohatchi is located near the border of the Navajo Nation.-Geography:Tohatchi is located at ....
  
  
• Tse Bonito
  Tse Bonito, New Mexico
  Tse Bonito is a census-designated place in McKinley County, New Mexico, United States. The population was 261 at the 2000 census.-Geography:...
  
  
• Twin Lakes
  Twin Lakes, New Mexico
  Twin Lakes is a census-designated place in McKinley County, New Mexico, United States. The population was 1,069 at the 2000 census.-Geography:Twin Lakes is located at ....
  
  
• Yah-ta-hey
  Yah-ta-hey, New Mexico
  Yah-ta-hey is a census-designated place in McKinley County, New Mexico, United States. As of the 2000 census, the CDP population was 580. The English name for this place is an approximation of a Navajo greeting, though the Navajo name means "like the devil", in reference to J.B...
  
  
• Zuni Pueblo
  Zuni Pueblo, New Mexico
  Zuni Pueblo is a census-designated place in McKinley County, New Mexico, United States. The population was 6,367 at the 2000 census...