States › New Jersey › Middlesex County
County · New Jersey
Middlesex County, NJ
863,623 residents, 680,119 adults (Census population estimates used by PLACES). 36 ZIP Codes and 51 places with estimates.
- New Jersey
- ZIP Codes
- Places
- Crude and age-adjusted estimates
Middlesex County, in New Jersey, has 863,623 residents in the Census population estimates used by PLACES (680,119 adults). CDC's PLACES project estimates 40 health measures for its adult population using a statistical model, not a local survey.
In the 2025 release it estimates that 29.9% of adults have obesity (95% confidence interval 25.9–34.1%), in line with the New Jersey figure of 28.9% (site aggregate), similar to the national estimate of 32.8%. Where intervals overlap the figures are described as similar, because the model cannot separate them.
Diagnosed diabetes: 11.6% of adults (95% confidence interval 10.1–13.1%) in the 2025 release, in line with the New Jersey figure of 10.9% (site aggregate), similar to the national estimate of 12.0%.
Across the 40 measures with a published estimate, the county's interval lies entirely above the New Jersey figure for 0, entirely below it for 3 and includes it for 37. State figures are population-weighted county estimates computed by this site and carry no interval.
Report card: 40 measures by CDC category
Crude prevalence is the estimated share of all adults. Age-adjusted prevalence is standardised to the 2000 US standard population so that areas with different age structures can be compared. CDC: "Age-adjusted estimates are only available at the county and place-level."
estimate with 95% intervalNJ figureUS estimate
Health outcomes (12)vs NJ figure: 0 above · 3 below · 9 in line
Prevention (7)vs NJ figure: 0 above · 0 below · 7 in line
Health risk behaviors (4)vs NJ figure: 0 above · 0 below · 4 in line
Disability (7)vs NJ figure: 0 above · 0 below · 7 in line
Health status (3)vs NJ figure: 0 above · 0 below · 3 in line
Health-related social needs (7)vs NJ figure: 0 above · 0 below · 7 in line
Flags: St. = New Jersey figure (site aggregate: a population-weighted county estimate computed by this site, no interval: above, below or in line), US = national estimate with CDC's interval. ↑ interval entirely above, ↓ entirely below, ≈ overlapping or containing the reference. Release column in colour: not published for this county in the 2025 release, most recent published release shown.
Compared with state and nation
| Measure (crude) | Middlesex County | New Jersey (site aggregate) | United States |
|---|---|---|---|
| Obesity | 29.9% 25.9–34.1 | 28.9% in line | 32.8% 32.4–33.1 · similar |
| Diabetes | 11.6% 10.1–13.1 | 10.9% in line | 12.0% 11.8–12.2 · similar |
| High Blood Pressure | 33.2% 30.4–36.1 | 32.8% in line | 34.4% 34.0–34.7 · similar |
| Current Asthma | 8.4% 7.4–9.4 | 8.9% in line | 9.8% 9.6–10.0 · lower |
| COPD | 4.4% 3.7–5.3 | 5.1% in line | 6.2% 6.1–6.3 · lower |
| Coronary Heart Disease | 5.1% 4.5–5.8 | 5.6% in line | 6.4% 6.2–6.5 · lower |
| Depression | 12.7% 10.9–14.7 | 15.1% below | 20.2% 19.9–20.5 · lower |
| Current Cigarette Smoking | 10.0% 8.1–12.0 | 10.9% in line | 11.4% 11.2–11.6 · similar |
| Binge Drinking | 14.6% 12.6–16.9 | 15.5% in line | 15.2% 15.0–15.5 · similar |
| Physical Inactivity | 25.3% 21.8–29.0 | 24.8% in line | 24.5% 24.2–24.8 · similar |
| Health Insurance | 10.8% 8.7–13.2 | 11.3% in line | 11.0% 10.7–11.3 · similar |
| General Health | 17.0% 14.6–19.5 | 17.1% in line | 19.2% 18.9–19.5 · similar |
| Measure (age-adjusted) | Middlesex County | New Jersey (site aggregate) | United States |
|---|---|---|---|
| Obesity | 29.7% 25.9–33.9 | 28.8% in line | 32.9% 32.5–33.2 · similar |
| Diabetes | 10.3% 9.0–11.7 | 9.4% in line | 10.3% 10.1–10.5 · similar |
| High Blood Pressure | 30.4% 27.7–33.2 | 29.3% in line | 30.7% 30.4–31.0 · similar |
| Current Asthma | 8.3% 7.4–9.3 | 8.9% in line | 9.8% 9.6–10.0 · lower |
| COPD | 3.9% 3.2–4.6 | 4.4% in line | 5.3% 5.2–5.4 · lower |
| Coronary Heart Disease | 4.4% 3.9–5.0 | 4.6% in line | 5.3% 5.2–5.4 · lower |
| Depression | 13.0% 11.1–14.9 | 15.6% below | 20.7% 20.4–21.0 · lower |
| Current Cigarette Smoking | 10.1% 8.2–12.0 | 11.0% in line | 11.6% 11.4–11.9 · similar |
| Binge Drinking | 15.5% 13.4–18.0 | 16.9% in line | 16.6% 16.3–16.9 · similar |
| Physical Inactivity | 24.7% 21.2–28.3 | 23.9% in line | 23.7% 23.4–24.0 · similar |
| Health Insurance | 11.2% 9.0–13.7 | 11.8% in line | 11.5% 11.2–11.9 · similar |
| General Health | 16.4% 14.1–18.8 | 16.3% in line | 18.3% 18.0–18.6 · similar |
Twelve headline measures; the toggle switches crude and age-adjusted. State figures are population-weighted county estimates computed by this site and carry no interval. Age-adjusted figures let counties with different age structures be compared.
ZIP Codes in Middlesex County
Ordered by point estimate; intervals overlap for most neighbouring rows, so the order is not a ranking. The flag compares each row's interval with Middlesex County by the confidence-interval rule.
| ZIP Codes | Population | Estimate | 95% interval | vs Middlesex County |
|---|---|---|---|---|
| ZIP 08861 | 58,039 | 40.7% | 36.0–45.4 | higher |
| ZIP 08832 | 3,027 | 37.6% | 33.0–42.1 | similar |
| ZIP 08901 | 56,278 | 36.2% | 32.1–40.4 | similar |
| ZIP 08882 | 16,118 | 34.6% | 30.2–38.9 | similar |
| ZIP 07008 | 25,342 | 33.5% | 29.4–37.7 | similar |
| ZIP 07077 | 2,885 | 33.3% | 29.2–37.6 | similar |
| ZIP 08879 | 22,965 | 33.3% | 29.0–37.7 | similar |
| ZIP 08846 | 14,636 | 33.2% | 28.9–37.5 | similar |
| ZIP 08872 | 20,351 | 32.3% | 28.1–36.5 | similar |
| ZIP 07001 | 16,920 | 32.1% | 28.0–36.3 | similar |
| ZIP 08859 | 24,666 | 31.9% | 27.8–36.0 | similar |
| ZIP 08863 | 12,939 | 31.7% | 27.5–35.9 | similar |
| ZIP 08884 | 8,185 | 31.7% | 27.6–36.1 | similar |
| ZIP 08857 | 40,675 | 31.5% | 27.5–35.7 | similar |
| ZIP 07064 | 3,905 | 31.4% | 27.4–35.5 | similar |
| ZIP 07095 | 19,839 | 31.4% | 27.4–35.5 | similar |
| ZIP 08850 | 8,325 | 31.4% | 27.3–35.7 | similar |
| ZIP 08902 | 43,296 | 31.3% | 27.3–35.4 | similar |
| ZIP 08828 | 2,455 | 31.2% | 27.0–35.6 | similar |
| ZIP 07747 | 31,915 | 30.1% | 26.9–33.6 | similar |
| ZIP 07067 | 18,609 | 30.0% | 26.1–34.1 | similar |
| ZIP 07080 | 24,261 | 30.0% | 26.0–33.9 | similar |
| ZIP 08904 | 15,072 | 28.5% | 24.8–32.6 | similar |
| ZIP 08840 | 17,841 | 27.8% | 24.1–31.7 | similar |
| ZIP 08837 | 18,463 | 27.2% | 23.5–30.9 | similar |
| ZIP 08831 | 55,123 | 27.1% | 23.5–31.0 | similar |
| ZIP 08816 | 48,729 | 27.0% | 23.3–30.9 | similar |
| ZIP 08817 | 48,243 | 26.5% | 22.9–30.3 | similar |
| ZIP 08854 | 60,545 | 26.3% | 22.7–30.0 | similar |
| ZIP 08824 | 13,300 | 25.2% | 21.7–28.8 | similar |
| ZIP 08852 | 18,956 | 24.8% | 21.3–28.5 | similar |
| ZIP 08830 | 20,088 | 24.0% | 20.7–27.5 | similar |
| ZIP 08810 | 8,170 | 23.6% | 20.2–27.1 | similar |
| ZIP 08512 | 12,897 | 23.5% | 20.8–26.3 | similar |
| ZIP 08536 | 20,682 | 21.8% | 18.6–25.2 | lower |
| ZIP 08820 | 41,169 | 20.5% | 17.5–23.7 | lower |
ZIP Codes are assigned to the county holding the largest share of their land area; ZIPs that straddle counties appear once.
Cities and places in Middlesex County
Ordered by point estimate; intervals overlap for most neighbouring rows, so the order is not a ranking. The flag compares each row's interval with Middlesex County by the confidence-interval rule.
| Places | Population | Estimate | 95% interval | vs Middlesex County |
|---|---|---|---|---|
| Perth Amboy | 55,436 | 40.9% | 36.2–45.6 | higher |
| Dunellen | 7,637 | 37.7% | 33.1–42.2 | similar |
| Keasbey | 3,027 | 37.6% | 33.0–42.1 | similar |
| Hopelawn | 2,603 | 36.8% | 32.2–41.3 | similar |
| New Brunswick | 55,266 | 36.6% | 32.4–40.8 | similar |
| South River | 16,118 | 34.6% | 30.2–38.9 | similar |
| Madison Park | 8,050 | 34.3% | 30.0–38.5 | similar |
| Carteret | 25,326 | 33.5% | 29.4–37.7 | similar |
| Laurence Harbor | 6,635 | 33.3% | 29.1–37.6 | similar |
| Sewaren | 2,885 | 33.3% | 29.2–37.6 | similar |
| Middlesex | 14,636 | 33.2% | 28.9–37.5 | similar |
| Jamesburg | 5,783 | 33.2% | 29.0–37.8 | similar |
| South Amboy | 9,411 | 33.0% | 28.6–37.3 | similar |
| Milltown | 7,037 | 32.2% | 27.9–36.6 | similar |
| Avenel | 16,920 | 32.1% | 28.0–36.3 | similar |
| Sayreville | 45,345 | 32.0% | 27.9–36.2 | similar |
| Fords | 12,941 | 31.7% | 27.5–35.9 | similar |
| Spotswood | 8,163 | 31.7% | 27.6–36.0 | similar |
| Old Bridge | 27,210 | 31.6% | 27.5–35.9 | similar |
| Woodbridge | 19,839 | 31.4% | 27.4–35.5 | similar |
| Port Reading | 3,921 | 31.4% | 27.4–35.5 | similar |
| Brownville | 2,746 | 31.3% | 27.1–35.4 | similar |
| Helmetta | 2,455 | 31.2% | 27.0–35.6 | similar |
| Clearbrook | 2,909 | 30.7% | 26.3–35.2 | similar |
| South Plainfield | 24,338 | 30.0% | 26.0–33.9 | similar |
| Colonia | 18,609 | 30.0% | 26.1–34.1 | similar |
| Encore at Monroe | 625 | 29.7% | 25.3–34.5 | similar |
| Rossmoor | 2,992 | 28.9% | 24.6–33.2 | similar |
| Highland Park | 15,072 | 28.5% | 24.8–32.6 | similar |
| Metuchen | 15,049 | 27.8% | 24.1–31.7 | similar |
| Menlo Park Terrace | 2,806 | 27.8% | 23.9–31.6 | similar |
| Kingston | 1,581 | 27.5% | 24.1–30.9 | similar |
| Concordia | 2,455 | 26.9% | 22.6–31.1 | similar |
| Kendall Park | 9,989 | 26.6% | 22.9–30.3 | similar |
| Stonebridge | 1,616 | 26.6% | 22.4–30.7 | similar |
| Regency at Monroe | 2,036 | 26.3% | 22.4–30.6 | similar |
| Cranbury | 2,200 | 26.2% | 22.3–30.0 | similar |
| Renaissance at Monroe | 637 | 26.0% | 22.2–30.1 | similar |
| The Ponds | 941 | 25.0% | 21.2–29.1 | similar |
| Whittingham | 2,348 | 24.7% | 20.8–29.0 | similar |
| Iselin | 20,088 | 24.0% | 20.7–27.5 | similar |
| Monmouth Junction | 8,895 | 23.8% | 20.4–27.3 | similar |
| Heathcote | 7,154 | 23.8% | 20.4–27.4 | similar |
| Dayton | 8,138 | 23.5% | 20.1–27.0 | similar |
| Princeton Meadows | 14,776 | 22.4% | 19.1–25.8 | lower |
| Forsgate | 2,056 | 21.7% | 18.6–25.1 | lower |
| Monroe Manor | 2,178 | 21.5% | 18.3–25.2 | lower |
| Plainsboro Center | 2,760 | 21.3% | 18.1–24.6 | lower |
| Deans | 1,615 | 21.2% | 18.0–24.5 | lower |
| Rutgers University-Busch Campus | 4,586 | 18.3% | 15.5–21.5 | lower |
| Rutgers University-Livingston Campus | 3,545 | 15.1% | 12.4–18.0 | lower |
Estimates by release
What each PLACES release published for Middlesex County (crude prevalence with 95% interval). CDC advises that the estimates cannot be used to track local change over time: each release re-models a different survey year onto a fixed population, intervals usually overlap and the interval method changed in 2023. Listed for reference only.
| Measure | 2022 release | 2023 release | 2024 release | 2025 release |
|---|---|---|---|---|
| COPD | 4.8% 4.1–5.5 | 4.7% 3.8–5.7 | 4.5% 4.0–5.0 | 4.4% 3.7–5.3 |
| Coronary Heart Disease | 5.8% 5.4–6.3 | 5.1% 4.5–5.8 | 5.8% 5.2–6.4 | 5.1% 4.5–5.8 |
| Current Asthma | 8.5% 8.2–8.8 | 8.7% 7.7–9.8 | 8.2% 7.3–9.1 | 8.4% 7.4–9.4 |
| Depression | 13.8% 13.1–14.5 | 16.8% 14.4–19.6 | 14.2% 12.3–16.1 | 12.7% 10.9–14.7 |
| Diabetes | 10.0% 9.4–10.6 | 10.8% 9.4–12.4 | 11.1% 9.8–12.5 | 11.6% 10.1–13.1 |
| High Blood Pressure | — | 30.4% 27.4–33.6 | 29.9% 27.1–32.9 | 33.2% 30.4–36.1 |
| Obesity | 23.4% 22.7–24.2 | 28.5% 24.5–33.0 | 27.1% 23.6–30.9 | 29.9% 25.9–34.1 |
| Health Insurance | 14.8% 12.9–16.8 | 11.1% 9.0–13.3 | 8.2% 7.4–9.1 | 10.8% 8.7–13.2 |
| Binge Drinking | 15.6% 15.3–15.9 | 13.0% 11.1–15.3 | 13.2% 11.3–15.4 | 14.6% 12.6–16.9 |
| Current Cigarette Smoking | 10.9% 9.4–12.5 | 10.9% 8.7–13.3 | 9.8% 8.6–11.1 | 10.0% 8.1–12.0 |
| Physical Inactivity | 20.8% 18.9–22.8 | 22.8% 19.4–26.7 | 22.0% 19.5–24.8 | 25.3% 21.8–29.0 |
| General Health | 11.1% 9.9–12.4 | 13.9% 11.8–16.0 | 14.8% 13.4–16.3 | 17.0% 14.6–19.5 |
Questions and answers
What share of adults in Middlesex County have obesity, according to PLACES?
PLACES estimates 29.9% (95% confidence interval 25.9–34.1%) in the 2025 release, based on 2023 BRFSS responses modelled onto the area's adult population. It is a modelled estimate for the whole adult population of the area, not a count of diagnoses.
How common is diagnosed diabetes in Middlesex County?
PLACES estimates 11.6% of adults (95% confidence interval 10.1–13.1%) in the 2025 release. The national estimate in the same release is 12.0%.
Is Middlesex County different from New Jersey on obesity?
The county's interval for obesity includes the New Jersey figure, so the two cannot be told apart by this model.
Can these figures describe a person who lives in Middlesex County?
No. CDC states: "We do not produce estimates for individuals; only aggregated results for counties, places, census tracts, or ZCTAs." The figures describe the expected prevalence across the area's adult population given its demographic make-up and its county and state; they say nothing about any resident.
Can Middlesex County be ranked or tracked over time with these figures?
CDC advises that the data "should not be used for ranking the overall health of any county, place, census tract, or ZCTA" and that the modelling procedure "does not support using the estimates to track changes at the local level over time". Areas can be compared on individual measures, with their confidence intervals; this site lists estimates by release for reference only.
Where does this data come from?
CDC PLACES: Local Data for Better Health, 2025 release (data updated 4 Dec 2025), which models Behavioral Risk Factor Surveillance System responses with Census population and American Community Survey data. Earlier releases (2022, 2023, 2024) are shown for reference. Boundaries and ZIP-to-county relationships are from the US Census Bureau.
Provenance
Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, 2025 release (data updated 4 Dec 2025), with the 2022, 2023, 2024 releases for reference; US government work, public domain. Dataset on data.cdc.gov. Boundaries and ZIP-to-county relationships: US Census Bureau. Percentages are shown to one decimal as CDC publishes them; state figures are population-weighted means computed by this site. Processing errors are corrected at the next daily build; see corrections. Generated 1 Oct 2026.