Montclair 07042 vs Sewell 08080

Density

Montclair and Sewell differ on a basic measure that shapes much of what follows in this report: population density. Montclair's ZCTA holds roughly 7,198 residents per square mile; Sewell, spread across a different land footprint, holds closer to 1,346 residents per square mile. That difference in how people are distributed across land is a useful lens for the crime, environmental, and health data broken down by ZIP code later in this report, though density alone does not determine outcomes in any of those categories. These figures are ZIP Code Tabulation Area counts, not separate citywide densities. Population density is useful context for interpreting crime, health, and environmental data: research on density and crime is mixed; density plus mobility can shape infectious-disease spread; and built form can interact with heat-island effects and air quality. None of those relationships should be treated as density alone causing the outcome.

Climate and outdoor living

Montclair is in USDA Hardiness Zone 7a, while Sewell is in USDA Hardiness Zone 7b. That gardening-zone context helps frame planting windows, overwintering conditions, and how landscaping choices interact with the ZIP-level weather context below.

Sun, heat, and outdoor access

Sun exposure, heat safety, and park access help explain how usable outdoor space can feel in day-to-day life. Those conditions can differ meaningfully across regions even when ZIP-level risk scores look similar.

Public health infrastructure (ports of entry)

Montclair is not listed by CDC as a Port Health Station location in the current CDC station list. Sewell is not listed by CDC as a Port Health Station location in the current CDC station list. This is not a claim about local disease burden; it is infrastructure context for how international-arrival public health monitoring is distributed.

Crime and Policing

Montclair Police Department reported 113 full-time sworn officers to the FBI in 2025, 2.73 sworn officers per 1,000 residents. The rate uses the 41,340 people the department reported serving that year. Washington Township, Gloucester County Police Department reported 82 full-time sworn officers to the FBI in 2025, 1.64 sworn officers per 1,000 residents. The rate uses the 49,956 people the department reported serving that year. This is the department that covers Sewell, not a separate headcount for Sewell. FBI-derived baseline crime data for Montclair reports 118.1 violent crimes per 100,000 residents, 836.3 property crimes per 100,000 residents, 954.4 total reported crimes per 100,000 residents. Consilium's stored FBI baseline score is 40.7/100, with a medium baseline classification. This is annual city/agency baseline context and should be read alongside the more recent ZIP-level crime signals in the report. FBI-derived baseline crime data for Washington Township, Gloucester County Police Department in 2024 reports 15.8 violent crimes per 100,000 residents, 593.9 property crimes per 100,000 residents, 609.7 total reported crimes per 100,000 residents. This is the annual baseline for the municipal police department that covers Sewell.

Homelessness

Consilium could not find a sourced homelessness record for Montclair. No count or policy is estimated. HUD's January 2025 Point-in-Time count for the Camden City & County/Gloucester, Cape May, Cumberland Counties Continuum of Care reported 1,457 people experiencing homelessness, including 1,259 sheltered and 198 unsheltered. This count includes Gloucester County together with other places named by HUD, and it is not a Gloucester County total or a Sewell figure. Consilium could not find a sourced homelessness policy record for Sewell.

Drug policy

Consilium could not find a sourced drug policy record for Montclair. No count or policy is estimated. Consilium could not find a sourced drug policy record for Sewell. No count or policy is estimated.

Closing calibration

None of this is presented to suggest one city is objectively safer, healthier, or better managed than the other. It is presented because these are real, source-backed differences in how each city is built, regulated, staffed, and monitored, and they provide useful context for the more granular ZIP-code comparisons that follow.

Montclair has a higher crime score of 4.07 compared to Sewell's score of 3.19, indicating a greater level of reported crime per capita in Montclair. This score reflects the total reported crimes per 100,000 residents, with Montclair experiencing 118.1 violent crimes and 836.3 property crimes per 100,000 residents. In contrast, Sewell reports 15.8 violent crimes and 593.9 property crimes per 100,000 residents, suggesting a lower overall crime concern in Sewell.

Sewell has a slightly higher environmental concern score of 9.23 compared to Montclair's 9.08, indicating more environmental risks associated with Sewell. Montclair has 79 TRI facilities within 10 miles, while Sewell has 19, suggesting greater industrial activity nearby in Montclair. The largest reported TRI release in Sewell is from Johnson Matthey at 9,632.23 pounds, significantly higher than Montclair's largest release of 2,115 pounds from Swepco Tube LLC, highlighting different environmental contexts that may impact local air and water quality. Chemical context is currently regional rather than exact facility-level attribution; nearby TRI activity could include chemicals such as 4,4'-Methylenebis(2-chloroaniline), Acetaldehyde, Benzene, Cobalt.

Montclair has significantly more healthcare facilities within 10 miles, totaling 13, compared to Sewell's 1 facility. This includes 10 hospitals in Montclair versus only 1 in Sewell, indicating better access to healthcare services for Montclair residents. However, it is important to note that the number of facilities does not guarantee quality of care or access to services.

Montclair has an average annual temperature of 53.3°F and receives approximately 49.7 inches of precipitation, while Sewell is slightly warmer with an average of 56°F and 49.9 inches of precipitation. Both areas experience similar seasonal weather patterns, with July being the hottest month and January the coldest. Montclair's climate context suggests a slightly cooler environment compared to Sewell, which may influence outdoor living preferences.