Illinois — 9th District
119th Congress · 30 ZIP codes · Avg score 65/100 · Grade C · Updated 2026-03-22
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-03-22
Top Contaminants
ZIP Codes in This District
30 ZIP codes tracked in Illinois's 9th District.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 60202 | Evanston | 82 | B | 0 |
| 2 | 60204 | Evanston | 81 | B | 0 |
| 3 | 60208 | Evanston | 81 | B | 0 |
| 4 | 60209 | Evanston | 81 | B | 0 |
| 5 | 60201 | Evanston | 77 | B | 0 |
| 6 | 60203 | Evanston | 77 | B | 0 |
| 7 | 60156 | Lake In The Hills | 76 | B | 1 |
| 8 | 60042 | Island Lake | 75 | B | 0 |
| 9 | 60102 | Algonquin | 73 | B | 0 |
| 10 | 60070 | Prospect Heights | 72 | B | 2 |
| 11 | 60013 | Cary | 71 | B | 1 |
| 12 | 60029 | Golf | 69 | C | 0 |
| 13 | 60712 | Lincolnwood | 69 | C | 3 |
| 14 | 60714 | Niles | 67 | C | 1 |
| 15 | 60640 | Chicago | 66 | C | 49 (3 health) |
| 16 | 60645 | Chicago | 66 | C | 49 (3 health) |
| 17 | 60091 | Wilmette | 65 | C | 1 |
| 18 | 60004 | Arlington Heights | 64 | C | 45 |
| 19 | 60068 | Park Ridge | 63 | C | 4 |
| 20 | 60026 | Glenview | 61 | C | 4 |
| 21 | 60626 | Chicago | 61 | C | 49 (3 health) |
| 22 | 60659 | Chicago | 61 | C | 49 (3 health) |
| 23 | 60660 | Chicago | 61 | C | 49 (3 health) |
| 24 | 60047 | Lake Zurich | 57 | C | 4 |
| 25 | 60021 | Fox River Grove | 56 | C | 4 |
| 26 | 60025 | Glenview | 51 | D | 4 |
| 27 | 60053 | Morton Grove | 50 | D | 3 |
| 28 | 60014 | Crystal Lake | 42 | D | 23 |
| 29 | 60077 | Skokie | 41 | D | 16 |
| 30 | 60076 | Skokie | 36 | F | 16 |
Overview
Illinois's 9th District serving an estimated 14,795,748 residents encompasses 30 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (65/100).
377 EPA violations have been recorded across this district's water systems. 15 are health-based violations. About 70% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Gross Beta — 67 violations
- Chlorite — 60 violations
- Surface Water Treatment Rule — 34 violations
- Consumer Confidence Report Rule — 26 violations
- Revised Total Coliform Rule — 26 violations
Housing Context
Homes in this district were built on average around 1966 (~60 years old). Older homes may have lead pipes or solder — consider a water filter if your home predates 1986.
Lead Alert: 1 ZIP code in this district exceed the EPA action level for lead. Consider using a certified lead-removal filter.
Data Sources
- Water quality violations: EPA Safe Drinking Water Information System (SDWIS)
- Congressional district boundaries: U.S. Census Bureau, 119th Congress
- Housing age: U.S. Census Bureau American Community Survey
Updated daily. Data covers 30 ZIP codes in Illinois's 9th District.