City in Allegheny County, Pennsylvania · 0.7 sq mi · 6,267 people per sq mi
About 4,600 people live in Arnold. The typical household earns $45,417, and the median resident is 40.6 years old.
2026 projection
From 4,768 in 2020
Poverty rate 25.47%
Men 32.4 · Women 49.3
1900–2026
4,588
2026 projection
3.8% since 2020 (decrease)
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.
1900–2026
4,588
2026 projection
3.8% since 2020 (decrease)
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 | 4,588 | -31 | 0.67% |
|---|---|---|---|
| 2025 | 4,619 | -28 | 0.60% |
| 2024 | 4,647 | -21 | 0.45% |
| 2023 | 4,668 | -26 | 0.55% |
| 2022 | 4,694 | -46 | 0.97% |
| 2021 | 4,740 | -28 | 0.59% |
| 2020 | 4,768 | -64 | 1.32% |
| 2019 | 4,832 | -30 | 0.62% |
| 2018 | 4,862 | -34 | 0.69% |
| 2017 | 4,896 | -45 | 0.91% |
Showing 10 of 28 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 47 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 4 residents
32% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 32% | 35% | 30% |
| Never married | 42% | 50% | 35% |
| Divorced | 15% | 10% | 19% |
| Widowed | 9% | 3% | 13% |
| Separated | 3% | 3% | 3% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau