Northumberland County's estimated 2026 population is 89,819 with a growth rate of -0.12% in the past year according to the most recent United States census data. Northumberland County is the 32nd largest county in Pennsylvania. The 2010 population was 94,287 and has seen a growth of -4.74% since that time.
Data after 2023 is projected based on recent change
The racial composition of Northumberland County includes 91.06% White, and smaller percentages for Black or African American, other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (91.06%)
Two or more races (3.93%)
Black or African American (2.71%)
Other race (1.75%)
Asian (0.47%)
Native American (0.07%)
Native Hawaiian or Pacific Islander (0.01%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 82,792 | 91.06% |
| Two or more races | 3,570 | 3.93% |
| Black or African American | 2,468 | 2.71% |
| Other race | 1,592 | 1.75% |
| Asian | 427 | 0.47% |
| Native American | 64 | 0.07% |
| Native Hawaiian or Pacific Islander | 12 | 0.01% |
Married
Widowed
Divorced
Separated
Never Married
Northumberland County's average per capita income is $42,841. Household income levels show a median of $57,948. The poverty rate stands at 12.24%.
Name | Median | Mean |
|---|---|---|
| Married Families | $89,525 | $103,993 |
| Families | $77,435 | $92,336 |
| Households | $57,948 | $75,909 |
| Non Families | $33,471 | $44,849 |
Average Income
Median Household Income
Poverty Rate