ZIP 11790

11790 is one of 108 ZIP codes that lie mostly in Suffolk County, NY.

Shaded by typical home value, it ranks 11 of the 39 nearby ZIPs shown.

2 school locations in 11790: 1 middle, 1 high.

In alphabetical order: ROBERT CUSHMAN MURPHY JUNIOR HIGH SCHOOL, WILLIAM SIDNEY MOUNT ELEMENTARY SCHOOL. Locations only — no ratings are shown here.

In January 2000 the typical home in 11790 was worth $244,053.

Values peaked at $801,708 in August 2026. The latest reading is the peak.

As of August 2026: $801,708, +9.1% over twelve months.

Start with the typical home: $801,708. Put 20% down and borrow $641,366 at 7.40%, the 30-year fixed average as of October 8, 2026.

That is $4,441 a month in principal and interest.

The median household here earns $157,695 a year, $13,141 a month. So the payment takes 33.8% of income — rated “stretched” (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 10.3% 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 $1,461.

In December 2020, with rates at 2.68%, it was $1,783.

By August 2026, at 6.67%, it was $4,125 — +131% since December 2020, while the home's value moved +46%.

Reported values rose +228% 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 $481,664. So the real change is +66%, not +228%.

11790: +229% since January 2000.

Suffolk County: +271% since January 2000.

New York: +244% since January 2000 — 11790 ran behind it by 16 points.

Owning the typical home costs about $5,242 a month once taxes and insurance (estimated at 1.2% of price a year) are added. Renting runs about $4,013 a month.

Price divided by a year's rent: 16.6. Lotvox reads under 15 as favoring buying and 20 or more as favoring renting.

Picture the Listings Flow Ladder as a basin: new listings pour in from the faucet, the homes for sale are the water, and closed sales run out the drain. Coming in — new listings: about 18 a month (Redfin, 3-month rolling data through August 2026).

On the shelf — homes for sale at the end of the period: 25.

Going out — closed sales: about 20 a month.

The ladder: homes for sale ÷ monthly sales = 1.3 months of supply — below the 4–6 month range Lotvox treats as balanced. In the basin, that is the water level against the shaded balanced band.

The net reading: about 2 more homes sold than came on each month, so inventory is shrinking. The basin is draining.

Homes sold: about 20 a month in August 2026 (Redfin).

The 2015–2019 level for the same month was 19 — so sales ran at 105% of it, and below it in 16 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: 25 in June 2026.

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

County assessor records list 4,635 properties with a market value here. Their average assessed market value is $623,585; the typical home value is $801,708.

The assessor average sits −22.2% from the market figure — an average against a typical value, so treat it as a check, not a verdict.