30 minutes driving from 30-min driving from 40.0067, -83.0305, traced against Ohio.

Thirty minutes driving from the origin near Ohio State covers 1,681,622 people across 2,151.8 square miles at 781.5 per square mile. The ring reaches well beyond campus into greater Columbus and the surrounding Franklin County exurbs, with 1,285,570 of voting age.

The ring around Ohio State holds 1.68 million people, with a voting-age population of 1.29 million across 1,146 block groups. The plurality is non-Hispanic white at roughly 58.3%, with Black residents at 19.3% and Hispanic and Asian shares tied at 6.1% each. Median age and county-level income, education, and foreign-born figures aren't resolvable at block-group level in this rollup, so the demographic read stops at race and population scale.

Franklin County ran D+28.4 in 2024 while Ohio overall sat at R+11.2 — a 39.6-point gap that puts the county on the opposite side of the state's headline read. OH-3, which carves out the Democratic core of Columbus, came in D+39.8, 11.4 points to the left of Franklin as a whole. The 30-minute ring itself doesn't report a margin in this table, so Franklin and OH-3 anchor the read on the commute-shed's partisan environment. Ohio shifted 3.2 points right since 2020 while Franklin moved 3.0 points right and OH-3 drifted 1.5 points right, with the urban rows holding their position relative to the state.

The ring moved 5.8 points more Democratic between 2008 and 2024, ending at D+17.6 after starting at D+11.8 under Obama. The peak came in 2020 at D+21.0, the high mark across the span. From 2016 to 2020 the margin widened by 5.0 points, the largest single-cycle swing in the series. The 2020→2024 cycle pulled 3.3 points right, leaving the ring 5.8 points above its 2008 baseline. Total votes climbed from 711,886 in 2008 to 815,796 in 2024.