Township in Lebanon County, Pennsylvania · 24.4 sq mi · 368 people per sq mi
About 9,000 people live in South Londonderry township. The typical household earns $112,374, and the median resident is 38.6 years old.
2026 projection
From 8,782 in 2020
Poverty rate 6.31%
Men 38.6 · Women 38.5
2010–2026
8,958
2026 projection
2% 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
8,958
2026 projection
2% 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 | 8,958 | +18 | 0.20% |
|---|---|---|---|
| 2025 | 8,940 | +18 | 0.20% |
| 2024 | 8,922 | +105 | 1.19% |
| 2023 | 8,817 | +6 | 0.07% |
| 2022 | 8,811 | -10 | 0.11% |
| 2021 | 8,821 | +39 | 0.44% |
| 2020 | 8,782 | +289 | 3.40% |
| 2019 | 8,493 | +26 | 0.31% |
| 2018 | 8,467 | +247 | 3.00% |
| 2017 | 8,220 | +287 | 3.62% |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 88 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 16 residents
58% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 58% | 60% | 55% |
| Never married | 27% | 30% | 24% |
| Divorced | 9% | 9% | 8% |
| Widowed | 5% | <1% | 10% |
| Separated | 2% | <1% | 3% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau