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New Castle

New Castle is one of New Hampshire’s most exclusive and picturesque coastal communities.

Welcome to New Castle

Connected to the mainland by a series of bridges and surrounded by the waters of the Atlantic Ocean and Piscataqua River, New Castle is one of New Hampshire’s most exclusive and picturesque coastal communities. Set primarily on islands and peninsulas along the Seacoast, New Castle offers an exceptional blend of maritime heritage, understated luxury, breathtaking waterfront scenery, and a distinctly private residential atmosphere.

As New Hampshire’s smallest town by land area and one of its oldest settled communities, New Castle has preserved a remarkable sense of character and identity. Historic homes, narrow coastal roads, and commanding ocean views create an environment that feels timeless and distinctly New England. Despite its proximity to neighboring communities, New Castle maintains a quiet and residential setting that has long made it one of the Seacoast’s most sought-after addresses.

Life in New Castle is defined by the water. Surrounded by harbors, inlets, rocky shorelines, and open ocean, the town offers a lifestyle centered around boating, sailing, walking, and enjoying the changing coastal landscape. Residents and visitors enjoy destinations such as Great Island Common, known for its sweeping ocean views, open lawns, and shoreline access, as well as nearby Fort Constitution Historic Site, which reflects the area’s rich maritime and military history.

New Castle is also home to the iconic Wentworth by the Sea, a historic grand hotel overlooking the harbor that has become synonymous with the elegance and coastal heritage of the region. The surrounding waterfront and marina contribute to the town’s sophisticated yet relaxed atmosphere.

Despite its peaceful and secluded feel, New Castle enjoys exceptional accessibility. Located just minutes from downtown Portsmouth, residents have convenient access to renowned dining, shopping, cultural attractions, and commuter routes while enjoying the privacy and tranquility of island living. Boston and the greater Seacoast region remain easily accessible.

From a residential perspective, New Castle is known for its extraordinary collection of oceanfront estates, historic coastal homes, and select residential enclaves that emphasize privacy, views, and connection to the water. Buyers are often drawn by the opportunity to experience true waterfront living in one of New England’s most distinctive communities.

New Castle represents one of the Seacoast’s most exceptional lifestyles, private yet connected, historic yet refined, and defined by the enduring beauty of life on the water. It is a place where ocean views, maritime traditions, and quiet luxury come together in a truly unique coastal setting.

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Overview for New Castle, NH

948 people live in New Castle, where the median age is 56.8 and the average individual income is $157,637. Data provided by the U.S. Census Bureau.

948

Total Population

56.8 years

Median Age

High

Population Density Population Density This is the number of people per square mile in a neighborhood.

$157,637

Average individual Income

Demographics and Employment Data for New Castle, NH

Population Households Employment

New Castle has 439 households, with an average household size of 2.16. Data provided by the U.S. Census Bureau. Here’s what the people living in New Castle do for work — and how long it takes them to get there. Data provided by the U.S. Census Bureau. 948 people call New Castle home. The population density is 1,172.46 and the largest age group is Data provided by the U.S. Census Bureau.

948

Total Population

High

Population Density Population Density This is the number of people per square mile in a neighborhood.

56.8

Median Age

51.9 / 48.1%

Men vs Women

Population by Age Group

0-9:

0-9 Years

10-17:

10-17 Years

18-24:

18-24 Years

25-64:

25-64 Years

65-74:

65-74 Years

75+:

75+ Years

Education Level

Less Than 9th Grade
High School Degree
Associate Degree
Bachelor Degree
Graduate Degree

439

Total Households

2.16

Average Household Size

$157,637

Average individual Income

Households with Children

With Children:

Without Children:

Marital Status

Married

Single

Divorced

Separated

Blue vs White Collar Workers

Blue Collar:

White Collar:

Commute Time

0 to 14 Minutes

15 to 29 Minutes

30 to 59 Minutes

60+ Minutes

Schools in New Castle, NH

All ()

Primary Schools ()

Middle Schools ()

High Schools ()

Mixed Schools ()

The following schools are within or nearby New Castle. The rating and statistics can serve as a starting point to make baseline comparisons on the right schools for your family. Data provided by the U.S. Census Bureau.

Type

Name

Explore Other Neighborhoods

New Castle

New Castle is one of New Hampshire’s most exclusive and picturesque coastal communities.

Kensington

Kensington offers a lifestyle centered around privacy, open space, and a connection to the region’s agricultural heritage.

Salisbury

Salisbury offers a lifestyle centered around the outdoors and the unique energy of New England’s coastline.

Rockport

Rockport offers a lifestyle that feels both timeless and deeply connected to the sea.

Plum Island & Beyond

Offers miles of sandy shoreline, natural landscapes, and a lifestyle deeply connected to the rhythms of the ocean.

The Hamptons

Despite its relaxed coastal atmosphere, the Hampton area remains exceptionally connected.

Stratham

Stratham offers a distinctive blend of rural character, natural beauty, and modern convenience.

Exeter

Exeter offers a unique combination of culture, convenience, and timeless appeal.

Portsmouth

Portsmouth delivers a lifestyle that feels both cosmopolitan and unmistakably New England.

Amesbury

Amesbury offers an appealing balance of character, convenience, and community.

Newbury

One defined by open landscapes, historic character, rural charm, and an unhurried pace of life.

Newburyport

Newburyport blends historic character, coastal beauty, and modern convenience.

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Jamie offers a concierge line of Real Estate services for Buyers & Sellers throughout the MA North Shore & NH Seacoast. With a personal approach, she combines local market knowledge and contract expertise to ensure a smooth and successful transaction.

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New Castle

Welcome to New Castle

Overview for New Castle, NH

948

56.8 years

High

$157,637

Demographics and Employment Data for New Castle, NH

948

High

56.8

51.9 / 48.1%

439

2.16

$157,637

Schools in New Castle, NH

Explore Other Neighborhoods

New Castle

Kensington

Salisbury

Rockport

Plum Island & Beyond

The Hamptons

Stratham

Exeter

Portsmouth

Amesbury

Newbury

Newburyport

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