Mammoth

County:: Westmoreland County
County Seat:: No
Area (mi²):: 2.022
State:: Pennsylvania

Mammoth is a CDP located in Westmoreland County, Pennsylvania. Mammoth has a 2025 population of 357. Mammoth is currently declining at a rate of -3.25% annually and its population has decreased by -16.59% since the most recent census, which recorded a population of 428 in 2020.

The average household income in Mammoth is $68,793 with a poverty rate of 13.3%. The median age in Mammoth is 64.1 years: 62.4 years for males, and 69.8 years for females.

Demographics

The racial composition of Mammoth includes 100% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race, Two or more races and multiracial populations.

Population by Race

White

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Two or more races

Race	Population	Percentage (of total)
White	421	100%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%
Two or more races	0	0%

Mammoth Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mammoth's average per capita income is $53,519. Household income levels show a median of $47,708. The poverty rate stands at 13.3%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$51,307	-
Households	$47,708	$68,793
Families	$37,196	$46,185
Non Families	-	$99,601

$53,519

Average Income

$47,708

Median Household Income

13.3%

Poverty Rate