Demographics & People — Marshallton CDP (Northumberland County), Pennsylvania
Population Overview
Population (Census)
1,234
Estimated 2026
~1,100
Median Age
47.8
Total Households
564
Family Households
297
Average Household Size
2.19
Diversity Index
N/A (N/A)
Race & Ethnicity
White
1,230
Black or African American
4
Asian
0
Hispanic or Latino
0
Heritage & Ancestry
Group
Count
Polish
298
Unclassified or not reported
291
German
225
Italian
166
English
142
Slovak
121
Irish
110
Dutch
89
Arab
34
Lebanese
34
Language
English Only
1,196
Spanish
12
Population 5+
1,208
Veterans
Veterans
104
Population 18+
1,074
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Marshallton CDP (Northumberland County), Pennsylvania.