The current metro area population of Lancaster in 2026 is 538,000, a 1.13% increase from 2025.

• The metro area population of Lancaster in 2025 was 532,000, a 1.14% increase from 2024.
• The metro area population of Lancaster in 2024 was 526,000, a 1.35% increase from 2023.
• The metro area population of Lancaster in 2023 was 519,000, a 1.17% increase from 2022.