Illinois State Record Largemouth Bass: 13 lb 1 oz
The Illinois state record largemouth bass weighed 13 lb 1 oz. It was caught in 1976 from Stone Quarry Lake in Lake County, and the Illinois DNR still recognizes it as the state mark 50 years later.
Where the record came from
The record came from Stone Quarry Lake in Lake County. We don't carry a water-quality grade for it: our index covers standing lakes with enough EPA Water Quality Portal samples to score, which leaves out rivers and tributaries, Great Lakes water, and smaller ponds that are rarely sampled. Browse the Illinois lakes we do grade instead.
Largemouth Bass records by state
Illinois ranks 4 of 12 among the states in our index for record largemouth bass. Indiana holds the heaviest at 14 lb 12 oz, set in 1991.
| # | State | Weight | Year | Water |
|---|---|---|---|---|
| 1 | Indiana | 14 lb 12 oz | 1991 | Lake |
| 2 | Missouri | 13 lb 14 oz | 1961 | Bull Shoals Lake |
| 3 | Ohio | 13 lb 2 oz | 1976 | Farm pond |
| 4 | Illinois (this page) | 13 lb 1 oz | 1976 | Stone Quarry Lake |
| 5 | New York | 12 lb 6 oz | 2024 | Cayuga Lake |
| 6 | Michigan | 11 lb 15 oz | 1934 | Big Pine Island Lake |
| 7 | Wisconsin | 11 lb 3 oz | 1940 | Lake Ripley |
| 8 | Pennsylvania | 11 lb 3 oz | 1983 | Birch Run Reservoir |
| 9 | Iowa | 10 lb 12 oz | 1984 | Lake Fisher |
| 10 | South Dakota | 9 lb 5 oz | 2020 | Indian Scout Lake |
| 11 | Minnesota | 8 lb 15 oz | 2005 | Auburn Lake |
| 12 | North Dakota | 8 lb 8 oz | 1983 | Nelson Lake |
Each figure comes from that state's own fisheries agency. Agencies differ on what they certify — some recognize catch-and-release length records alongside weight — so treat this as a comparison of standing certified weights, not a single national list.
How it ranks inside Illinois
11 of Illinois's 19 standing records are heavier than the 13 lb 1 oz largemouth bass — unsurprising, since record weight tracks species size more than anything about the water. 5 Illinois records have stood longer, the largemouth bass mark dating to 1976.