ZIP code 01830

ZIP 01830 is a small city in Essex County, Massachusetts, with 26,685 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #82 of 539 ranked by population — larger than 84% of them. The median age here is 39.2 years against 39.1 nationally, a slightly older profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in ZIP 01830 earn a median of $79,784 a year, 1.6% above the national figure of $78,538. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 14.8% of residents here, above the 12.4% national rate.

The typical owner-occupied home in ZIP 01830 is valued at $436,400, 43.8% above the national figure, while median gross rent runs $1,602 a month, 13.9% above the national figure, or roughly $19,224 across a full year. A household on the local median income would put about 24.1% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 5.5×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 56.9% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

Median income runs above the national figure while poverty also runs above it — a split distribution, not a uniformly comfortable place. Averages hide that; the two numbers together do not.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

ZIP 01830 is tabulated inside Essex County, Massachusetts, one of 44 ZIP areas the Census publishes for that county and 539 across Massachusetts. This is a mid-sized suburban ZIP inside a county that is split across many delivery areas. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 01830 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 01830 reports a median household income of $79,784, 32% below the $117,072 county median, and 26% below the $107,198 typical MA ZIP. Owner-occupied homes are valued at a median of $436,400, 30% below the county figure and 9% below the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,602 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Massachusetts charges 6.25% statewide, and no local sales tax is layered on top, so the state rate is the full amount collected in 01830.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 01830 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.