Multnomah County, Oregon
60 ZIP codes · Avg score 81/100 · Grade B · Updated
ZipCheckup grade for Multnomah County: B.
This ZIP looks solid, with a few items worth a quick check.
Unlike many counties its size, Multnomah County keeps violation rates low - all 60 ZIP codes score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Multnomah County Compares
How Multnomah County Compares
Multnomah County scores 4 points below the Oregon state average (85/100) and 8 points above 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: Multnomah County, Oregon
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11 (asthma 11.7%, diabetes 9.5%)
Estimated additional annual cost per homeowner: $1,076, driven primarily by flood
Violation History (2021–2024)
↑ Worsening trendEPA violation counts by year across Multnomah County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 4 violations. Past 5 years: 10 total (10 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: $1,076
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Multnomah County
Remediation costs are relatively manageable for most homeowners in Multnomah 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 Multnomah County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Multnomah County
8 community water systems serving Multnomah County.
- B
- B
- C
- C
- C
- B
Show all 8 water systems
- B
- B
20 total water systems serve Multnomah County.
Systems with the most violations in Multnomah County
5 water systems with recorded EPA violations.
- B
- B
- B
- B
All ZIP Codes in Multnomah County
60 ZIP codes tracked in Multnomah County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 97019 | Corbett | 83 | B | 2 | $666K |
| 2 | 97201 | Portland | 83 | B | 1 | $648K |
| 3 | 97203 | Portland | 83 | B | 1 | $469K |
| 4 | 97204 | Portland | 83 | B | 1 | — |
| 5 | 97205 | Portland | 83 | B | 1 | $694K |
| 6 | 97209 | Portland | 83 | B | 1 | $574K |
| 7 | 97210 | Portland | 83 | B | 1 | $992K |
| 8 | 97211 | Portland | 83 | B | 1 | $617K |
| 9 | 97212 | Portland | 83 | B | 1 | $825K |
| 10 | 97213 | Portland | 83 | B | 1 | $609K |
| 11 | 97214 | Portland | 83 | B | 1 | $733K |
| 12 | 97215 | Portland | 83 | B | 1 | $659K |
| 13 | 97216 | Portland | 83 | B | 1 | $439K |
| 14 | 97217 | Portland | 83 | B | 1 | $570K |
| 15 | 97218 | Portland | 83 | B | 1 | $493K |
| 16 | 97220 | Portland | 83 | B | 1 | $428K |
| 17 | 97227 | Portland | 83 | B | 1 | $596K |
| 18 | 97232 | Portland | 83 | B | 1 | $801K |
| 19 | 97233 | Portland | 83 | B | 1 | $385K |
| 20 | 97239 | Portland | 83 | B | 1 | $713K |
| 21 | 97266 | Portland | 83 | B | 1 | $421K |
| 22 | 97221 | Portland | 82 | B | 5 | $790K |
| 23 | 97024 | Fairview | 81 | B | 6 (1 health) | $404K |
| 24 | 97230 | Portland | 81 | B | 6 (1 health) | $436K |
| 25 | 97219 | Portland | 79 | B | 13 (1 health) | $652K |
| 26 | 97030 | Gresham | 78 | B | 15 | $418K |
| 27 | 97080 | Gresham | 78 | B | 16 | $485K |
| 28 | 97202 | Portland | 77 | B | 18 | $685K |
| 29 | 97060 | Troutdale | 75 | B | 23 (1 health) | $426K |
| 30 | 97231 | Portland | 73 | B | 66 (2 health) | $795K |
| 31 | 97236 | Portland | 66 | C | 3 | $414K |
| 32 | 97010 | Bridal Veil | — | — | — | |
| 33 | 97014 | Cascade Locks | — | — | 33 | $338K |
| 34 | 97228 | Portland | — | — | — | |
| 35 | 97238 | Portland | — | — | — | |
| 36 | 97240 | Portland | — | — | — | |
| 37 | 97242 | Portland | — | — | — | |
| 38 | 97250 | Portland | — | — | — | |
| 39 | 97251 | Us West | — | — | — | |
| 40 | 97252 | Portland | — | — | — | |
| 41 | 97253 | Us Bank | — | — | — | |
| 42 | 97254 | Gen Electric | — | — | — | |
| 43 | 97256 | Portland | — | — | — | |
| 44 | 97258 | Portland | — | — | 1 | — |
| 45 | 97268 | Portland | — | — | — | |
| 46 | 97269 | Portland | — | — | — | |
| 47 | 97272 | Portland | — | — | — | |
| 48 | 97280 | Portland | — | — | — | |
| 49 | 97281 | Portland | — | — | — | |
| 50 | 97282 | Portland | — | — | — | |
| 51 | 97283 | Portland | — | — | — | |
| 52 | 97286 | Portland | — | — | — | |
| 53 | 97290 | Portland | — | — | — | |
| 54 | 97291 | Portland | — | — | — | |
| 55 | 97292 | Portland | — | — | — | |
| 56 | 97293 | Portland | — | — | — | |
| 57 | 97294 | Portland | — | — | — | |
| 58 | 97296 | Portland | — | — | — | |
| 59 | 97298 | Portland | — | — | — | |
| 60 | 97299 | Portland | — | — | — |
Recommended Buyer Guides for Multnomah 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 1 ZIP code
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Multnomah County, Oregon
Overview
Multnomah County in Oregon covers 60 tracked ZIP records with an average Home Safety Score of B (81/100) across 31 scored records.
33 of 33 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 4 health-based violations appear in the available health breakdown.
← Back to Oregon 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.