WI District 4
Wisconsin · 1 Counties · Milwaukee, Wauwatosa, West Allis
civdotiq.org
Federal Representatives
Tammy Baldwin
Democratic · U.S. Senator
Phone: 202-224-5653
Web: https://www.baldwin.senate.gov
Office: 141 Hart Senate Office Building Washington DC 20510
Ron Johnson
Republican · U.S. Senator
Phone: 202-224-5323
Web: https://www.ronjohnson.senate.gov
Office: 328 Hart Senate Office Building Washington DC 20510
Gwen Moore
Democratic · U.S. Representative
Phone: 202-225-4572
Web: https://gwenmoore.house.gov
Office: 2252 Rayburn House Office Building Washington DC 20515-4904
Key Demographics
725,486
Population
$60K
Median Income
34
Median Age
| Metric | Value |
|---|---|
| Bachelor's Degree or Higher | 21.1% |
| Poverty Rate | 19.6% |
| Urban Population | 82% |
| Diversity Index | 67.7 |
| Land Area | 140 sq mi |
Federal Spending
$12.1M
Total Annual
123
Contracts & Grants
$9.3M
Infrastructure
| Project | Agency | Amount |
|---|---|---|
| ARMSTRONG ELEVATOR COMPANY | Department of Veterans Affairs | $8.1M |
| METROPOLITAN SECURITY SERVICES, INC. | Department of Justice | $2.9M |
| DATA INNOVATIONS LLC | Department of Veterans Affairs | $2.0M |
| GUARD FORCES LLC | Department of Veterans Affairs | $1.3M |
| PARKING VETERANS INC | Department of Veterans Affairs | $1.3M |
Statewide Context
1,107,383
Wisconsin Medicaid & CHIP (Jun 2026)
303,714
Wisconsin Veteran Population (FY2026)
Statewide totals, not specific to this district — these federal programs report only at the state level. Sources: CMS (data.medicaid.gov), VA NCVAS (datahub.va.gov).
Geography
| Counties (1) | Major Cities |
|---|---|
| Milwaukee | Milwaukee, Wauwatosa, West Allis |