PlainZIP

Buffalo, IL

Single-footprint Census roll-up for Buffalo, IL: 1 USPS ZIP, population 961. 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 BUFFALO-IL · Buffalo, IL 1 ZIPs · 961 pop · #16735/25278 · Sangamon County

INC-MID · RANK-LOWER · BELOW-PEER · BOOK-ONE · OWN-MID · POP-VILLAGE · SPREAD-UNK · HOME-LOW

  • INC-MID $62,222
  • RANK-LOWER #16735/25278
  • BELOW-PEER under Springfield
  • BOOK-ONE 1 ZIP
  • OWN-MID 80% owners
  • POP-VILLAGE 961
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $143,700

Nearest income peer: Springfield, IL (+ $12,526 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 Buffalo

Lowest/highest poles plus county-sharing cities nearest Buffalo 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, Buffalo, IL sits among US cities with a below-median household income, on a village-scale population base, across a single-ZIP footprint.

34th pct
household income vs 25,278 US cities
961
city population (Census)
1
USPS ZIP codes covered
$62,222
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.

Below-median income with few delivery areas (1): read cost-of-living from the primary ZIP. Household income $62,222 and poverty 19.0% concentrate in 62515.

Owner-occupancy sits in a mixed band (79.9%) - check the ZIP page's tenure split before treating Buffalo as a pure owner town.

Within Illinois, Niota is the closest lower-income city and Livingston the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Buffalo.

Population concentration

One ZIP, 62515, is all of Buffalo

There is no split to weigh here: 62515 holds every one of Buffalo's 961 ACS residents. City-level and ZIP-level numbers on this site are the same number twice, check the ZIP page for the income/tenure/commute breakdown.

Census ZBP business roll-up

Mid-pack ZBP load on Buffalo's one ZIP

Citywide ZBP: 15 establishments, 73 employees , annual payroll $3,327k (~16 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 62515 (15 units) ; leading NAICS Construction (4) .

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ZIP Codes in Buffalo, IL

These ZIP codes sit in Sangamon County, which covers 25 ZIP codes in all; 1 of them fall in Buffalo. See the Sangamon County roll-up →

Every one of the 12 cities sharing Sangamon County reports a higher average ZIP median income than Buffalo, Springfield, Chatham and Auburn among them. That gap is the county's income spread, not a measure of the housing or commute picture below. Sherman marks the far end of that range at $139,196, 124% above Buffalo.

ZIP Code Population Median income Establishments Density
62515 961 $62,222 15 6
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Buffalo 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 Buffalo, .