A group of local planning and demography specialists known as the Regional Data Group estimate the county will have 887,000 residents by 2050, an increase of roughly 58% from the 2020 census count of 561,504.
The Regional Data Group includes staff from the Capital Area Regional Planning Commission and the Greater Madison Metropolitan Planning Organization, along with the city, county and University of Wisconsin-Madison. Its projections take into account local development patterns and expects much more room for population influx.