Township in Dauphin County, Pennsylvania · 22.8 sq mi · 216 people per sq mi
About 4,900 people live in Londonderry township. The typical household earns $91,905, and the median resident is 40.5 years old.
2026 projection
From 4,895 in 2020
Poverty rate 8.87%
Men 40.8 · Women 40.5
2010–2026
4,922
2026 projection
0.6% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2010–2026
4,922
2026 projection
0.6% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 4,922 | -3 | 0.06% |
|---|---|---|---|
| 2025 | 4,925 | -3 | 0.06% |
| 2024 | 4,928 | +14 | 0.28% |
| 2023 | 4,914 | +23 | 0.47% |
| 2022 | 4,891 | -9 | 0.18% |
| 2021 | 4,900 | +5 | 0.10% |
| 2020 | 4,895 | -354 | 6.74% |
| 2019 | 5,249 | +5 | 0.10% |
| 2018 | 5,244 | +3 | 0.06% |
| 2017 | 5,241 | +16 | 0.31% |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 49 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 11 residents
59% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 59% | 58% | 60% |
| Never married | 25% | 27% | 23% |
| Divorced | 9% | 6% | 12% |
| Widowed | 7% | 10% | 5% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau