Property tax rate
0.71%Above state avg 0.50%Median bill $2,499/yr · CensusMedian rent
$1,4482-bed $1,487Per month · CensusDays on market
40 days▼ 2 days vs last yearSeptember 2026 · Realtor.comWhat the numbers say
New Castle County, DE real estate at a glance
By AstroCore · Realtor.com, US Census and Freddie Mac data
In September 2026, the median home in New Castle County listed for $427,000, up 1.8% from a year earlier. That is 12% below the Delaware median of $484,998.
Homes spent a median of 40 days on the market, faster than 42 days a year ago.
Homeowners in New Castle County pay a median of $2,499 a year in property taxes on a median home value of $352,200, an effective rate of about 0.71%. The Delaware average is 0.50%.
Renters pay a median of $1,448 a month, and $1,487 for a two-bedroom. At today's prices a typical home costs about 25 times a year's rent, which generally favors renting over buying in the short term.
With 20% down and today's 7.24% average 30-year rate, the monthly payment on a $427,000 home here comes to about $2,758 including property tax and insurance. Lenders typically want that to be under 28% of income, which works out to roughly $118,000 a year (the median household here earns $91,166).
Monthly payment on a typical home
$2,758/mo- Principal & interest$2,328
- Property tax$252
- Insurance (est.)$178
$427,000 home · 20% down · 7.24% 30-year fixed
Run your own numbersRents in New Castle County by bedrooms
Studio$1,2395% above state
1 bedroom$1,2414% above state
2 bedrooms$1,4876% above state
3 bedrooms$1,7146% above state
4 bedrooms$1,851Same as state
Median gross rent (rent plus utilities), US Census American Community Survey 2024 5-year estimates.
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Sources: Realtor.com housing inventory (monthly) and Freddie Mac Primary Mortgage Market Survey (weekly), via FRED, Federal Reserve Bank of St. Louis; US Census Bureau American Community Survey 5-year estimates (property taxes, home values, rents, income). Insurance is an estimate. Medians for the whole county; individual homes vary. For information only.