Middlesex County, Massachusetts
Above the national median for owner housing burden.
Main Findings
Middlesex County, Massachusetts ranks 2,632nd most distressed in the United States on the County Distress Index. The driver: 31% of owner households pay 30%+ of income on housing — above the national median of 24%.
- 2,632nd of 3,144 counties on the County Distress Index — Healthy zone, 12th in Massachusetts.
- 31% of owner households pay 30%+ of income on housing (U.S. median 24%). Owner housing burden at the 92nd percentile nationally.
- Rent-to-income ratio at 28% — national median 21%, ranked at the 90th percentile.
- Unemployment at 5% — national median 4%, ranked at the 56th percentile.
- Structural Poverty domain score 11 — weight 13.6% of the CDI composite.
Neighbors span two CDI zones. The 15-point drop to Norfolk County marks where the Greater Boston distress corridor ends.
"Middlesex County is one of the steadier counties on the index — durable fundamentals, but the risk here is a single asymmetric shock."
"Healthy-zone counties cluster in high-income metros and college towns. The risk here is thin: what breaks these places is an asymmetric shock, not structural distress."
The Indicators Behind Middlesex County's CDI Score
Every number traces to a public source. Middlesex County's value shown alongside MA's median and the U.S. median. Full CSV available for download.
| Indicator | Middlesex | MA median | U.S. median | Pctile | Source |
|---|---|---|---|---|---|
| Consumer Credit Distress — domain score 12 · Rank 3,021 of 3,144 | |||||
| Debt in collections Share of residents with a credit file who have debt in collections | 12% | 15% | 23% | 7th | Urban Institute (2024) |
| Medical debt in collections Share of residents with a credit file who have medical debt in collections | 1% | 1% | 4% | 24th | Urban Institute (2024) |
| Auto loan delinquency Share of auto loan accounts 60+ days past due | 3% | 4% | 5% | 15th | Urban Institute (2024) |
| Credit card delinquency Share of credit card accounts 60+ days past due | 3% | 5% | 5% | 14th | Urban Institute (2024) |
| Uninsured rate Share of residents without health insurance coverage | 2% | 3% | 8% | 1st | Census ACS 5-yr (2023) |
| Subprime credit share Share of residents with a credit score below 660 | 14% | 19% | 23% | 8th | Urban Institute (2024) |
| Housing Cost Burden — domain score 80 · Rank 399 of 3,144 | |||||
| Rent burden (30%+) Share of renter households paying 30%+ of income on rent | 45% | 49% | 38% | 78th | Census ACS 5-yr (2023) |
| Severe rent burden (50%+) Share of renter households paying 50%+ of income on rent | 22% | 25% | 18% | 73rd | Census ACS 5-yr (2023) |
| Owner housing burden Share of owner households paying 30%+ of income on housing | 31% | 32% | 24% | 92nd | Census ACS 5-yr (2023) |
| Homeownership rate Share of occupied housing units that are owner-occupied | 62% | 69% | 74% | 9th | Census ACS 5-yr (2023) |
| Structural Poverty — domain score 11 · Rank 2,995 of 3,144 | |||||
| Unemployment Share of labor force unemployed | 5% | 5% | 4% | 56th | BLS LAUS (Dec 2025) |
| Poverty rate Share of population below the federal poverty line | 8% | 10% | 14% | 6th | Census SAIPE (2023) |
| Household income relative to state Median household income as share of state median | 1.33× | 1.00× | 1.00× | 91st | Census SAIPE (2023) |
| Child poverty rate Share of children under 18 below the federal poverty line | 8% | 12% | 18% | 4th | Census SAIPE (2023) |
| Disability rate Share of residents reporting a disability | 10% | 12% | 16% | 5th | Census ACS 5-yr (2023) |
| Transfer-income dependency Share of personal income from government transfers | 10% | 18% | 27% | 1st | BEA Regional Personal Income (2023) |
| Legal Distress — domain score 10 · Rank 2,826 of 3,144 | |||||
| Bankruptcy filing rate Personal bankruptcy filings per 100,000 residents | 51 | 72 | 126 | 10th | US Courts F-5A (2025) |
| Economic Vitality — domain score 72 · Rank 421 of 3,144 | |||||
| Wage-to-rent ratio Ratio of average weekly wage to fair-market rent | 3.4× | 2.7× | 4.0× | 21st | BLS QCEW × HUD FMR (2024) |
| Rent-to-income ratio Fair Market Rent (2BR) as share of median household income | 28% | 30% | 21% | 90th | HUD FMR × Census ACS (2024) |
| Business formation rate New business applications per 1,000 residents | 11.6 | 10.3 | 10.0 | 65th | Census Business Formation Statistics (2024) |
| House price change (yoy) House price index year-over-year change | 4% | 4% | 4% | 48th | FHFA HPI (2024) |
Five-Domain Breakdown
The CDI is a PCA-weighted composite of five statistically derived factors. Weights are proportional to each factor's share of explained variance across 3,144 counties.
Methodology
The County Distress Index is a 0–100 composite score of household financial distress, computed for all 3,144 U.S. counties. A score of 50 represents the national county median; higher scores indicate greater distress. The index is built from 21 indicators grouped into five statistically derived factors via principal component analysis (PCA); factor weights are proportional to each factor's share of explained variance (shown in the Five-Domain Breakdown above).
Data sources include the Urban Institute Debt in America (Equifax consumer credit panel), U.S. Census Bureau (American Community Survey 5-year, Small Area Income and Poverty Estimates, Business Formation Statistics), Bureau of Labor Statistics (Local Area Unemployment Statistics, Quarterly Census of Employment and Wages), U.S. Courts Administrative Office (F-5A bankruptcy filings), and HUD Fair Market Rents. Data vintages range from 2023 to 2025 depending on source; full indicator-level vintage detail is in the methodology document.
For Press & Research
Everything you need to cite Middlesex County data — in under 60 seconds.
Draft wire copy 153-word AP-style article — use freely with attribution
MIDDLESEX, Mass.. — Middlesex County ranks 2,632nd among the nation's most financially distressed counties, according to the County Distress Index released this month by American Default Research.
The composite score of 32 out of 100 places Middlesex in the "Healthy" zone, the highest-distress category on the index. Among 3,144 U.S. counties scored, only 2631 rank worse. Within Massachusetts, Middlesex ranks 12th of 14 counties.
The index, which draws on 21 indicators from the U.S. Census Bureau, Bureau of Labor Statistics, Urban Institute and federal court filings, identifies housing cost burden as the primary driver in Middlesex. 31% of owner households pay 30%+ of income on housing — above the national median of 24%.
"Middlesex County is one of the steadier counties on the index — durable fundamentals, but the risk here is a single asymmetric shock." said Ross Kilburn, founder of American Default Research.
Full methodology and county-by-county data are available at americandefault.org/methodology/cdi.
Frequently Asked Questions
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