Lake County, Indiana
What we have for Lake County today, and what is coming.
Basics
- County code (FIPS): 18089
- Land area: 499 square miles
- Population: 498,700
Federal money spent here
Fiscal year 2026: $3.6 billion in federal contracts, grants, loans and other awards for work done in Lake County.
Who represents Lake County
U.S. Senate (whole state): Jim Banks (Republican), Todd Young (Republican).
U.S. House districts that include part of this county
| District | Member | Share of county land |
|---|---|---|
| Congressional District 1 | Frank J. Mrvan (Democrat) | 100% |
State senate districts
| District | Member | Share of county land |
|---|---|---|
| State Senate District 6 | Rick Niemeyer (Republican) | 54% |
| State Senate District 3 | Mark Spencer (Democratic) | 22.8% |
| State Senate District 1 | Dan Dernulc (Republican) | 13.8% |
| State Senate District 2 | Lonnie Randolph (Democratic) | 9.4% |
State house / assembly districts
| District | Member | Share of county land |
|---|---|---|
| State House District 11 | Mike Aylesworth (Republican) | 38.1% |
| State House District 19 | Julie Olthoff (Republican) | 18.2% |
| State House District 3 | Ragen Hatcher (Democratic) | 10.1% |
| State House District 15 | Hal Slager (Republican) | 9.1% |
| State House District 2 | Earl Harris (Democratic) | 7.9% |
| State House District 14 | Vernon Smith (Democratic) | 7.6% |
| State House District 12 | Mike Andrade (Democratic) | 4.9% |
| State House District 1 | Carolyn Jackson (Democratic) | 4.1% |
Matched by district number using the U.S. Census Bureau 2020 county–district relationship files (land area overlap; districts may have been redrawn since). Your exact district depends on your address: U.S. House · state legislators.
County government
Find the official county website and contacts in the USA.gov local government directory or the National Association of Counties explorer.
Coming next for counties: county commission meetings and agendas, county budgets, local ballot measures and election results. We add each one as soon as a public, reliable feed exists for it. Know a good source? Tell us.
Sources: U.S. Census Bureau Gazetteer (county list, public domain); USAspending.gov (U.S. Treasury). Built 2026-11-03 15:28.