WILMAPCO Demographic Projections
Current Population Changes by County 2020-2050
| County | 2020 | 2050 | Change |
| New Castle | 571,058 | 603,757 | 32,699 |
| Cecil | 103,100 | 134,580 | 31,480 |
| Total | 674,158 | 738,337 | 64,149 |
* Sources Delaware Population Consortium, Maryland Department of Planning
Recent WILMAPCO Presentation Materials on the Development of Demographic Forecasts
- Delaware in 2040 – June 2023 Demographic Changes and Impacts on Infrastructure: UD IPA event presentation
- 2022 Demographic Projections Update: January 2023 WILMAPCO Council Meeting
- Delaware Population & Household Trends by Planning District: 2000-2020
- Presentation: Delaware Small Areas (TAZ) Geography Update: June 2022 Delaware Population Consortium Meeting
- Presentation: Delaware Population Projections, traffic modeling and demographic trends:
Delaware APA Monthly Lunch and Learning Series, February 2022 - Presentation: Countywide Census Population Trends: 1980 to 2020: September 2021 Delaware Population Consortium Meeting
- Delaware Population Consortium Projections – 2021 Series (PDF) Adopted 10/31/21
- 2021 Demographic Projections Update: March 2021 WILMAPCO Council Meeting
Data Downloads
| State of Delaware Projetions by Traffic Analysis Zone (TAZ)- 2022 Update | Zipped Shapefile |
| Cecil County Projections by Traffic Analysis Zone (TAZ) – 2022 Update | Zipped Shapefile |
| Delaware Municipal Population Projections 2020-2050 | Excel |
| Delaware Seasonal Population Estimates by County 2020-2050 | Excel |