PlainZIP

Guilford, CT

Single-footprint Census roll-up for Guilford, CT: 1 USPS ZIP, population 22,375. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet GUILFORD-CT · Guilford, CT 1 ZIPs · 22,375 pop · #1242/25278 · New Haven County

INC-TOP · RANK-TOP · ABOVE-PEER · BOOK-ONE · OWN-MID · POP-TOWN · SPREAD-UNK · HOME-HIGH

  • INC-TOP $137,615
  • RANK-TOP #1242/25278
  • ABOVE-PEER over North Haven
  • BOOK-ONE 1 ZIP
  • OWN-MID 84% owners
  • POP-TOWN 22,375
  • SPREAD-UNK Single-ZIP book
  • HOME-HIGH $515,000

Nearest income peer: North Haven, CT ( $4,786 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Guilford

Lowest/highest poles plus county-sharing cities nearest Guilford on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Guilford, CT sits among US cities with a top-decile household income, on a town-scale population base, across a single-ZIP footprint.

Top 5%
household income vs 25,278 US cities
22,375
city population (Census)
1
USPS ZIP codes covered
$137,615
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $137,615 and home value $515,000 should be read as near-neighborhood numbers ; bachelor's attainment averages 60.5%.

Owner-occupancy sits in a mixed band (83.6%) - check the ZIP page's tenure split before treating Guilford as a pure owner town.

Within Connecticut, Mystic is the closest lower-income city and New Fairfield the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Guilford.

Population concentration

Guilford's single ZIP 06437 carries the town

Guilford is published as a single USPS ZIP. Code 06437 is the entire residential footprint (22,375 ACS residents), so the city page and the ZIP page tell the same household story, open that ZIP for income, tenure, and commute detail.

Census ZBP business roll-up

Dense ZBP book packed into Guilford's one ZIP

Citywide ZBP: 669 establishments, 8,094 employees , annual payroll $614,889k (~30 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 06437 (669 units) ; leading NAICS Health care and social assistance (107) · also Retail trade · Professional, scientific, and technical services .

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ZIP Codes in Guilford, CT

These ZIP codes sit in New Haven County, which covers 41 ZIP codes in all; 1 of them fall in Guilford. See the New Haven County roll-up →

Guilford sits in the upper half of New Haven County on income: New Haven, Waterbury and Hamden report less, while Cheshire reports more. Waterbury marks the far end of that range at $45,657, 67% below Guilford.

ZIP Code Population Median income Establishments Density
06437 22,375 $137,615 669 184
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Guilford roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Guilford, .