Illinois · frequency scorecard · sampled 2026-08-26

Chicago transit, by the numbers

B−

Frequent service reaches 35% of stops, and the typical midday wait is about 20 minutes. Service runs nearly around the clock.

Frequent service

35%

of 24,574 stops ≤15 min

Median headway

20 min

typical midday wait

Service span

28 hrs

first to last departure

Weekend change

-12%

Saturday vs weekday midday

Every stop, by frequency

Very frequent (≤7 min) 1,598

Frequent (8–15 min) 6,900

Moderate (16–30 min) 6,675

Infrequent (31–60 min) 6,437

Sparse (>60 min) 2,964

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CTA + Metra + Pace GTFS cta (unversioned) · metra (unversioned) · pace 20260531 · sampled 2026-08-26 weekday midday · generated 2026-08-16 · methodology