Cook County, Illinois
218 ZIP codes · Avg score 68/100 · Grade C · Updated
ZipCheckup grade for Cook County: C.
A mixed picture - some signals here are worth your attention.
Water monitoring across Cook County's 218 ZIP codes paints a mid-range picture - solid compliance in some zones, documented concerns in others; most violations on record are concentrated in specific prior years rather than spread evenly across the full compliance history, and the overall county grade has held steady in the middle tier without major shifts in either direction.
How Cook County Compares
How Cook County Compares
Cook County scores 0 points above the Illinois state average (68/100) and 5 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Cook County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.2 (asthma 9.8%, diabetes 11.8%)
Estimated additional annual cost per homeowner: $2,451, driven primarily by flood
78% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Cook County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 82 violations. Past 5 years: 108 total (108 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $2,451
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,263,242 housing units in Cook County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Cook County
Remediation costs are relatively manageable for most homeowners in Cook County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Cook County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Cook County
8 community water systems serving Cook County.
- C
- B
- C
- B
- B
- C
150 total water systems serve Cook County.
Systems with the most violations in Cook County
5 water systems with recorded EPA violations.
- C
- C
- C
- C
- C
All ZIP Codes in Cook County
218 ZIP codes tracked in Cook County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 60022 | Glencoe | 75 | B | 0 | $1345K |
| 2 | 60163 | Berkeley | 75 | B | 1 | $223K |
| 3 | 60165 | Stone Park | 75 | B | 2 | $218K |
| 4 | 60201 | Evanston | 75 | B | 0 | $578K |
| 5 | 60202 | Evanston | 75 | B | 0 | $381K |
| 6 | 60301 | Oak Park | 75 | B | 1 | $230K |
| 7 | 60302 | Oak Park | 75 | B | 1 | $451K |
| 8 | 60457 | Hickory Hills | 75 | B | 0 | $278K |
| 9 | 60458 | Justice | 75 | B | 0 | $224K |
| 10 | 60465 | Palos Hills | 75 | B | 1 | $259K |
| 11 | 60470 | Ransom | 75 | B | 0 | $114K |
| 12 | 60482 | Worth | 75 | B | 1 | $217K |
| 13 | 60706 | Harwood Heights | 75 | B | 0 | $348K |
| 14 | 60712 | Lincolnwood | 75 | B | 1 | $475K |
| 15 | 60805 | Evergreen Park | 75 | B | 0 | $256K |
| 16 | 60169 | Hoffman Estates | 74 | B | 4 | $292K |
| 17 | 60176 | Schiller Park | 74 | B | 1 | $276K |
| 18 | 60195 | Schaumburg | 74 | B | 3 | $240K |
| 19 | 60534 | Lyons | 74 | B | 1 | $244K |
| 20 | 60026 | Glenview | 73 | B | 4 | $663K |
| 21 | 60043 | Kenilworth | 73 | B | 4 | $1410K |
| 22 | 60154 | Westchester | 73 | B | 4 | $297K |
| 23 | 60162 | Hillside | 73 | B | 4 | $234K |
| 24 | 60456 | Hometown | 73 | B | 2 | $152K |
| 25 | 60067 | Palatine | 72 | B | 7 | $428K |
| 26 | 60171 | River Grove | 72 | B | 4 | $245K |
| 27 | 60173 | Schaumburg | 72 | B | 7 | $311K |
| 28 | 60194 | Schaumburg | 72 | B | 6 | $311K |
| 29 | 60467 | Orland Park | 72 | B | 5 | $392K |
| 30 | 60601 | Chicago | 72 | B | 10 | $495K |
| 31 | 60602 | Chicago | 72 | B | 10 | $383K |
| 32 | 60603 | Chicago | 72 | B | 10 | $608K |
| 33 | 60604 | Chicago | 72 | B | 10 | $578K |
| 34 | 60605 | Chicago | 72 | B | 10 | $496K |
| 35 | 60606 | Chicago | 72 | B | 10 | $367K |
| 36 | 60607 | Chicago | 72 | B | 10 | $494K |
| 37 | 60608 | Chicago | 72 | B | 10 | $342K |
| 38 | 60609 | Chicago | 72 | B | 10 | $252K |
| 39 | 60610 | Chicago | 72 | B | 10 | $543K |
| 40 | 60611 | Chicago | 72 | B | 10 | $608K |
| 41 | 60612 | Chicago | 72 | B | 10 | $332K |
| 42 | 60613 | Chicago | 72 | B | 10 | $398K |
| 43 | 60614 | Chicago | 72 | B | 10 | $731K |
| 44 | 60615 | Chicago | 72 | B | 10 | $305K |
| 45 | 60616 | Chicago | 72 | B | 10 | $387K |
| 46 | 60617 | Chicago | 72 | B | 10 | $168K |
| 47 | 60618 | Chicago | 72 | B | 10 | $538K |
| 48 | 60619 | Chicago | 72 | B | 10 | $213K |
| 49 | 60620 | Chicago | 72 | B | 10 | $188K |
| 50 | 60621 | Chicago | 72 | B | 10 | $162K |
| 51 | 60622 | Chicago | 72 | B | 10 | $623K |
| 52 | 60623 | Chicago | 72 | B | 10 | $221K |
| 53 | 60624 | Chicago | 72 | B | 10 | $223K |
| 54 | 60625 | Chicago | 72 | B | 10 | $397K |
| 55 | 60626 | Chicago | 72 | B | 10 | $269K |
| 56 | 60628 | Chicago | 72 | B | 10 | $159K |
| 57 | 60630 | Chicago | 72 | B | 10 | $363K |
| 58 | 60632 | Chicago | 72 | B | 10 | $241K |
| 59 | 60636 | Chicago | 72 | B | 10 | $151K |
| 60 | 60637 | Chicago | 72 | B | 10 | $244K |
| 61 | 60639 | Chicago | 72 | B | 10 | $289K |
| 62 | 60640 | Chicago | 72 | B | 10 | $363K |
| 63 | 60641 | Chicago | 72 | B | 10 | $373K |
| 64 | 60642 | Chicago | 72 | B | 10 | $604K |
| 65 | 60643 | Chicago | 72 | B | 10 | $234K |
| 66 | 60645 | Chicago | 72 | B | 10 | $308K |
| 67 | 60647 | Chicago | 72 | B | 10 | $557K |
| 68 | 60649 | Chicago | 72 | B | 10 | $200K |
| 69 | 60651 | Chicago | 72 | B | 10 | $263K |
| 70 | 60653 | Chicago | 72 | B | 10 | $348K |
| 71 | 60654 | Chicago | 72 | B | 10 | $496K |
| 72 | 60657 | Chicago | 72 | B | 10 | $535K |
| 73 | 60659 | Chicago | 72 | B | 10 | $359K |
| 74 | 60660 | Chicago | 72 | B | 10 | $288K |
| 75 | 60661 | Chicago | 72 | B | 10 | $398K |
| 76 | 60076 | Skokie | 71 | B | 6 | $381K |
| 77 | 60104 | Bellwood | 71 | B | 4 (1 health) | $219K |
| 78 | 60130 | Forest Park | 71 | B | 6 | $294K |
| 79 | 60131 | Franklin Park | 71 | B | 8 | $262K |
| 80 | 60164 | Melrose Park | 71 | B | 8 | $240K |
| 81 | 60192 | Hoffman Estates | 71 | B | 11 | $414K |
| 82 | 60480 | Willow Springs | 71 | B | 6 | $356K |
| 83 | 60634 | Chicago | 71 | B | 11 | $334K |
| 84 | 60646 | Chicago | 71 | B | 11 | $494K |
| 85 | 60091 | Wilmette | 70 | B | 7 | $800K |
| 86 | 60093 | Winnetka | 70 | B | 9 | $1074K |
| 87 | 60107 | Streamwood | 70 | B | 14 | $258K |
| 88 | 60484 | University Park | 70 | B | 28 (1 health) | $141K |
| 89 | 60631 | Chicago | 70 | B | 20 | $431K |
| 90 | 60656 | Chicago | 70 | B | 20 | $344K |
| 91 | 60707 | Elmwood Park | 70 | B | 13 | $315K |
| 92 | 60025 | Glenview | 69 | C | 9 | $512K |
| 93 | 60193 | Schaumburg | 69 | C | 14 | $318K |
| 94 | 60475 | Steger | 69 | C | 19 | $137K |
| 95 | 60513 | Brookfield | 69 | C | 7 | $314K |
| 96 | 60655 | Chicago | 69 | C | 16 | $303K |
| 97 | 60077 | Skokie | 68 | C | 10 | $327K |
| 98 | 60415 | Chicago Ridge | 68 | C | 8 (1 health) | $218K |
| 99 | 60425 | Glenwood | 68 | C | 14 | $182K |
| 100 | 60453 | Oak Lawn | 68 | C | 8 (1 health) | $268K |
| 101 | 60455 | Bridgeview | 68 | C | 7 (1 health) | $234K |
| 102 | 60459 | Burbank | 68 | C | 7 (1 health) | $259K |
| 103 | 60464 | Palos Park | 68 | C | 11 (2 health) | $463K |
| 104 | 60476 | Thornton | 68 | C | 12 | $147K |
| 105 | 60487 | Tinley Park | 68 | C | 12 | $340K |
| 106 | 60501 | Summit Argo | 68 | C | 8 | $227K |
| 107 | 60160 | Melrose Park | 67 | C | 12 (1 health) | $265K |
| 108 | 60305 | River Forest | 67 | C | 10 (1 health) | $677K |
| 109 | 60629 | Chicago | 67 | C | 14 (1 health) | $236K |
| 110 | 60652 | Chicago | 67 | C | 14 (1 health) | $235K |
| 111 | 60803 | Alsip | 67 | C | 13 | $201K |
| 112 | 60053 | Morton Grove | 66 | C | 12 | $377K |
| 113 | 60062 | Northbrook | 66 | C | 13 | $626K |
| 114 | 60304 | Oak Park | 66 | C | 12 (1 health) | $470K |
| 115 | 60526 | La Grange Park | 66 | C | 14 (1 health) | $428K |
| 116 | 60714 | Niles | 66 | C | 13 | $351K |
| 117 | 60422 | Flossmoor | 65 | C | 17 | $304K |
| 118 | 60428 | Markham | 65 | C | 13 | $119K |
| 119 | 60445 | Midlothian | 65 | C | 14 | $202K |
| 120 | 60644 | Chicago | 65 | C | 18 (1 health) | $238K |
| 121 | 60153 | Maywood | 64 | C | 13 (2 health) | $213K |
| 122 | 60463 | Palos Heights | 64 | C | 20 (1 health) | $344K |
| 123 | 60477 | Tinley Park | 64 | C | 14 | $262K |
| 124 | 60438 | Lansing | 63 | C | 17 (2 health) | $169K |
| 125 | 60638 | Chicago | 63 | C | 25 (1 health) | $284K |
| 126 | 60090 | Wheeling | 62 | C | 30 | $244K |
| 127 | 60461 | Olympia Fields | 62 | C | 23 | $289K |
| 128 | 60558 | Western Springs | 62 | C | 17 (1 health) | $691K |
| 129 | 60068 | Park Ridge | 61 | C | 31 (1 health) | $540K |
| 130 | 60402 | Berwyn | 61 | C | 25 (1 health) | $278K |
| 131 | 60070 | Prospect Heights | 60 | C | 33 | $343K |
| 132 | 60155 | Broadview | 60 | C | 19 (1 health) | $241K |
| 133 | 60429 | Hazel Crest | 60 | C | 23 | $181K |
| 134 | 60462 | Orland Park | 60 | C | 23 (1 health) | $330K |
| 135 | 60525 | La Grange | 60 | C | 23 (1 health) | $423K |
| 136 | 60527 | Willowbrook | 60 | C | 26 (2 health) | $488K |
| 137 | 60546 | Riverside | 60 | C | 18 | $378K |
| 138 | 60804 | Cicero | 60 | C | 30 (1 health) | $236K |
| 139 | 60004 | Arlington Heights | 59 | C | 36 | $415K |
| 140 | 60018 | Des Plaines | 59 | C | 24 (1 health) | $302K |
| 141 | 60452 | Oak Forest | 59 | C | 25 | $249K |
| 142 | 60469 | Posen | 59 | C | 18 | $174K |
| 143 | 60005 | Arlington Heights | 58 | C | 47 | $376K |
| 144 | 60007 | Elk Grove Village | 58 | C | 37 (1 health) | $335K |
| 145 | 60008 | Rolling Meadows | 58 | C | 44 | $295K |
| 146 | 60016 | Des Plaines | 58 | C | 27 | $301K |
| 147 | 60056 | Mount Prospect | 58 | C | 48 | $376K |
| 148 | 60089 | Buffalo Grove | 58 | C | 37 | $393K |
| 149 | 60409 | Calumet City | 58 | C | 39 (3 health) | $134K |
| 150 | 60411 | Chicago Heights | 58 | C | 144 | $148K |
| 151 | 60418 | Crestwood | 58 | C | 47 | $188K |
| 152 | 60443 | Matteson | 58 | C | 51 (1 health) | $229K |
| 153 | 60466 | Park Forest | 58 | C | 70 (2 health) | $106K |
| 154 | 60471 | Richton Park | 58 | C | 47 (2 health) | $201K |
| 155 | 60472 | Robbins | 58 | C | 40 | $114K |
| 156 | 60473 | South Holland | 58 | C | 63 (3 health) | $200K |
| 157 | 60478 | Country Club Hills | 58 | C | 24 | $181K |
| 158 | 60633 | Chicago | 58 | C | 31 (1 health) | $182K |
| 159 | 60827 | Riverdale | 58 | C | 51 | $124K |
| 160 | 60430 | Homewood | 43 | D | 27 | $209K |
| 161 | 60406 | Blue Island | 42 | D | 57 | $166K |
| 162 | 60426 | Harvey | 42 | D | 68 (2 health) | $89K |
| 163 | 60006 | Arlington Heights | — | — | — | |
| 164 | 60009 | Elk Grove Village | — | — | — | |
| 165 | 60017 | Des Plaines | — | — | — | |
| 166 | 60019 | Des Plaines | — | — | — | |
| 167 | 60029 | Golf | — | — | 3 | $958K |
| 168 | 60038 | Palatine | — | — | — | |
| 169 | 60055 | Palatine | — | — | — | |
| 170 | 60065 | Northbrook | — | — | — | |
| 171 | 60074 | Palatine | — | — | 31 | $308K |
| 172 | 60078 | Palatine | — | — | — | |
| 173 | 60082 | Techny | — | — | — | |
| 174 | 60094 | Palatine | — | — | — | |
| 175 | 60095 | Palatine | — | — | — | |
| 176 | 60133 | Hanover Park | — | — | 14 | $261K |
| 177 | 60141 | Hines | — | — | 8 | — |
| 178 | 60159 | Schaumburg | — | — | — | |
| 179 | 60161 | Melrose Park | — | — | — | |
| 180 | 60168 | Schaumburg | — | — | — | |
| 181 | 60179 | Hoffman Estates | — | — | — | |
| 182 | 60196 | Schaumburg | — | — | — | |
| 183 | 60204 | Evanston | — | — | — | |
| 184 | 60208 | Evanston | — | — | 0 | — |
| 185 | 60209 | Evanston | — | — | — | |
| 186 | 60290 | Chicago | — | — | — | |
| 187 | 60303 | Oak Park | — | — | — | |
| 188 | 60412 | Chicago Heights | — | — | — | |
| 189 | 60419 | Dolton | — | — | 31 (3 health) | $141K |
| 190 | 60454 | Oak Lawn | — | — | — | |
| 191 | 60499 | Bedford Park | — | — | — | |
| 192 | 60664 | Chicago | — | — | — | |
| 193 | 60666 | Chicago | — | — | — | |
| 194 | 60668 | Chicago | — | — | — | |
| 195 | 60669 | Chicago | — | — | — | |
| 196 | 60670 | Chicago | — | — | — | |
| 197 | 60673 | Chicago | — | — | — | |
| 198 | 60674 | Chicago | — | — | — | |
| 199 | 60675 | Chicago | — | — | — | |
| 200 | 60677 | Chicago | — | — | — | |
| 201 | 60678 | Chicago | — | — | — | |
| 202 | 60679 | Chicago | — | — | — | |
| 203 | 60681 | Chicago | — | — | — | |
| 204 | 60682 | Chicago | — | — | — | |
| 205 | 60684 | Chicago | — | — | — | |
| 206 | 60685 | Chicago | — | — | — | |
| 207 | 60686 | Chicago | — | — | — | |
| 208 | 60687 | Chicago | — | — | — | |
| 209 | 60688 | Chicago | — | — | — | |
| 210 | 60689 | Chicago | — | — | — | |
| 211 | 60690 | Chicago | — | — | — | |
| 212 | 60691 | Chicago | — | — | — | |
| 213 | 60693 | Chicago | — | — | — | |
| 214 | 60694 | Chicago | — | — | — | |
| 215 | 60695 | Chicago | — | — | — | |
| 216 | 60696 | Chicago | — | — | — | |
| 217 | 60697 | Chicago | — | — | — | |
| 218 | 60699 | Chicago | — | — | — |
Recommended Buyer Guides for Cook County
While many sites publish identical guide lists across every county they cover, the selection here changes by location - driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Water Filters for PFAS — PFAS detected in 9 ZIP codes
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 78% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
Deep Dive Reports
Detailed analysis for Cook County, Illinois
Overview
Cook County in Illinois covers 218 tracked ZIP records with an average Home Safety Score of C (68/100) across 162 scored records.
159 of 168 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 15 health-based violations appear in the available health breakdown.
← Back to Illinois Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.