ZIP 11948

11948 is one of 108 ZIP codes that lie mostly in Suffolk County, NY.

Shaded by typical home value, it ranks 18 of the 34 nearby ZIPs shown.

In January 2000 the typical home in 11948 was worth $247,597.

Values peaked at $1,045,376 in April 2026. The latest reading is −0.9% from that peak.

As of August 2026: $1,035,637, +6.3% over twelve months.

Start with the typical home: $1,035,637. Put 20% down and borrow $828,510 at 7.40%, the 30-year fixed average as of October 8, 2026.

That is $5,736 a month in principal and interest.

The median household here earns $146,054 a year, $12,171 a month. So the payment takes 47.1% of income — rated “severe” (Lotvox ZIP bands: under 28% affordable · 28–36% stretched · 36%+ severe).

The line holds today's rate fixed and moves only the price: at that rate, the same share was 11.3% in 2000.

Take the typical home's price each month, borrow 80% at that month's actual 30-year average rate: in January 2000 (8.21%) the payment was $1,483.

In December 2020, with rates at 2.68%, it was $2,253.

By August 2026, at 6.67%, it was $5,328 — +136% since December 2020, while the home's value moved +49%.

Reported values rose +318% since January 2000.

General prices (CPI-U) rose +97% over the same span.

Divide one by the other: in August 2026 dollars, the 2000 home was worth $488,658. So the real change is +112%, not +318%.

11948: +318% since January 2000.

Suffolk County: +271% since January 2000.

New York: +244% since January 2000 — 11948 ran ahead of it by 74 points.

Owning the typical home costs about $6,772 a month once taxes and insurance (estimated at 1.2% of price a year) are added. Renting runs about $2,255 a month.

Price divided by a year's rent: 38.3. Lotvox reads under 15 as favoring buying and 20 or more as favoring renting.

Homes sold: about 1 a month in August 2026 (Redfin).

The 2015–2019 level for the same month was 3 — so sales ran at 33% of it, and below it in 12 of the last 24 months.

Across Suffolk County, builders pulled permits for 1,399 new homes in 2025.

Of those, 78% were in 1-unit buildings (the Census Bureau's category for detached and attached single homes).

This ZIP sits in Suffolk County. IRS tax returns for 2022-2023: among the ten counties sending the most households, 15,767 moved in. Among the ten receiving the most, 11,246 moved out.

Net across those counties: +4,521 households. Beside it, homes for sale in this ZIP: 6 in June 2026.

Most arrivals came from Nassau, NY (6,970 households); most departures went to Nassau, NY (4,060).

County assessor records list 731 properties with a market value here. Their average assessed market value is $981,818; the typical home value is $1,035,637.

The assessor average sits −5.2% from the market figure — an average against a typical value, so treat it as a check, not a verdict.