GreatAmericanLakes

Beach · Lake Michigan · Illinois

Wilmette Gillson Park Beach

A public beach on Lake Michigan in Cook County, Illinois, 0.28 miles of shore. The state samples the water for bacteria twice a month through a 101-day swim season.

Chart of Wilmette Gillson Park Beach on Lake Michigan, with neighboring beaches markedWilmette Langdon BeachWilmette Gillson Park Dog BeachKenilworth BeachWinnetka Centennial Dog BeachLincoln Street BeachWinnetka Elder Park BeachWilmette Gillson Park Beach

The beach

On the record

Water
Lake Michigan
Location
Cook County, Illinois
Length
0.28 miles
Owner
Public
Access
Public Access
Water sampling
Yes — twice a month in the swim season
Swim season
101 days, as reported
Monitoring tier
Tier 1 — the state’s highest monitoring priority
Water quality standard
E. coli, geometric mean: 300 CFU per 100 mL
EPA beach ID
IL637664
Coordinates
42.0830° N, 87.6910° W to 42.0810° N, 87.6860° W

As the state reported it to EPA for the 2025 season. Sampling schedules change year to year. How beach monitoring works →

Down the shore

Nearest Michigan beaches

  1. Wilmette Langdon Beach0.4 mi · sampled · IL
  2. Wilmette Gillson Park Dog Beach0.6 mi · sampled · IL
  3. Kenilworth Beach1.2 mi · sampled · IL
  4. Winnetka Centennial Dog Beach1.7 mi · sampled · IL
  5. Lincoln Street Beach1.7 mi · sampled · IL
  6. Winnetka Elder Park Beach1.7 mi · sampled · IL

Straight-line distance.

On the horizon

Lighthouses nearby

On shore nearby

Worth the stop

Source

Facts on this page are from the EPA BEACON profile for beach IL637664, the record Illinois files under the federal BEACH Act, retrieved 2026-10-10. The county is placed from the beach’s own coordinates. A blank field means the record is silent. Parking, fees, lifeguards and dog rules are set by whoever runs the beach; check with them before you go.

Chart shoreline generalized from Natural Earth (public domain). Not for navigation. Something wrong or missing? Write to contact@greatamericanlakes.com.