PlainZIP

Holtsville, NY · standard

ZIP Code 11742

Suffolk County, New York - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

13,261
1,024/sq mi
$125,162
Median income
$510,200
Median home value
36.1%
Bachelor's or higher

The verdict

Holtsville pairs a top-decile household income with upper-quartile home values, in a low-density, homeowner-dominated area.

Top 8%
household income, US ZIPs
Top 13%
home value, US ZIPs
1,024
people per sq mi
84%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 11742 against every reporting US ZIP.

ZIP code 11742 is a mid-sized community (a standard USPS delivery area) in Holtsville, Suffolk County, New York, home to 13,261 residents across 12.9 square miles, a density of 1,024 people per square mile, in the New York time zone.

ZIP 11742 skews affluent, with a median household income of $125,162 (35% above the New York average), while per-capita income is $55,928. The poverty rate stands at 5.6% and the unemployment rate at 3.1%. Median home value sits at $510,200 (35% above the state average), median rent at $2,400 a month, and owner-occupancy at 83.6%.

A solid share of residents have a four-year degree: 36.1% of adults hold a bachelor's degree or higher, the median age is 39.3, and the average commute is 31 minutes. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Suffolk County, letting you compare 11742 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 11742

Top 5 sectors by establishment count in Holtsville, NY

Which industries have the most business establishments in ZIP 11742.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 11742, Holtsville, NY · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

13,261

Population

12.9

Area (sq mi)

1,024

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 11742?

39.3

Median Age

50.7%

Male

49.3%

Female

12.6%

Foreign-Born

White 77.5%
African American 4.1%
Asian 2.5%
American Indian or Alaska Native 1.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 9.5%
Hispanic or Latino 16.8%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$125,162

Median Household Income

+35% vs state

$55,928

Per Capita Income

5.6%

Poverty Rate

3.1%

Unemployment Rate

30.7 min

Mean Commute Time

How ZIP 11742 ranks nationally

Holtsville, NY household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$125,162 Top 8% higher than 92% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 61.6%
Bachelor's Degree or Higher 36.1%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

4,725

Total Housing Units

4,651

Occupied Units

74

Vacant Units

2.82

Avg Household Size

Occupancy Type

Owner 83.6%
Renter 16.4%

$510,200

Median Home Value

+35% vs state

$2,400

Median Rent

1977

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+12.3%

YoY Change (2024)

306

HPI Index (2000 = 100)

+206%

Total Change Since 2000

Home values in ZIP 11742 have increased 12.3% over the past year (2024). Since 2000, this ZIP has seen +206% cumulative appreciation.

Year Annual Change HPI Index
2020 +2.1% 206
2021 +11.3% 229
2022 +13.4% 259
2023 +5.0% 272
2024 +12.3% 306

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 345 business establishments in ZIP 11742, employing approximately 5,410 people with a combined annual payroll of $397,631,000.

345

Businesses

5,410

Employees

$397.6M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Construction 80 23.2%
Professional, scientific, and technical services 40 11.6%
Wholesale trade 33 9.6%
Other services (except public administration) 30 8.7%
Retail trade 29 8.4%
Health care and social assistance 28 8.1%
Accommodation and food services 22 6.4%
Real estate and rental and leasing 17 4.9%
Administrative and support and waste management and remediation services 15 4.3%
Manufacturing 12 3.5%
Transportation and warehousing 12 3.5%
Finance and insurance 9 2.6%
Arts, entertainment, and recreation 7 2.0%
Utilities 5 1.4%
Educational services 3 0.9%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 11742 vs 11738 →

ZIP 11742 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 11742 ranks #9 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 11742 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 11742 ranks #6 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
11738 Farmingville, NY 17,638 2.0 mi
11741 Holbrook, NY 27,655 1.8 mi
11784 Selden, NY 24,655 4.1 mi
11715 Blue Point, NY 4,752 4.2 mi
11763 Medford, NY 28,506 3.2 mi
11779 Ronkonkoma, NY 38,421 3.9 mi
11705 Bayport, NY 8,030 4.5 mi
11720 Centereach, NY 29,189 4.7 mi
11772 Patchogue, NY 44,837 4.4 mi
11776 Port Jefferson Station, NY 24,235 7.2 mi

More ZIP Codes in Suffolk County

11746 standard
Huntington Station, NY
Pop: 67,094
11706 standard
Bay Shore, NY
Pop: 62,543
11717 standard
Brentwood, NY
Pop: 60,745
11757 standard
Lindenhurst, NY
Pop: 45,700
11772 standard
Patchogue, NY
Pop: 44,837
11743 standard
Huntington, NY
Pop: 42,230

Related Areas

Suffolk County Holtsville, NY New York

Frequently Asked Questions

What county is ZIP code 11742 in? ▼
ZIP code 11742 (Holtsville) is located in Suffolk County, New York. Suffolk County contains multiple ZIP codes, see the full list at /counties/suffolk-ny.
What is the population of ZIP code 11742? ▼
ZIP code 11742 in Holtsville, NY has a population of 13,261 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 11742? ▼
The median household income in ZIP 11742 is $125,162, which is 64% above the national average of $76,288.
What is the average home value in ZIP 11742? ▼
The median home value in ZIP 11742 is $510,200, which is 83% above the national average of $278,155.
What is the demographic makeup of ZIP 11742? ▼
The largest racial group in ZIP 11742 is White at 77.5%. Hispanic or Latino residents make up 16.8% of the population.
How many businesses are in ZIP code 11742? ▼
ZIP code 11742 has 345 business establishments employing approximately 5,410 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 11742? ▼
The top industries by establishment count in ZIP 11742 are: Construction (80), Professional, scientific, and technical services (40), Wholesale trade (33). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 11742? ▼
According to the FHFA House Price Index, home values in ZIP 11742 increased by 12.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 206%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 11742? ▼
In ZIP code 11742, 61.6% of residents aged 25+ have a high school diploma or higher, and 36.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 11742? ▼
The mean commute time for workers in ZIP code 11742 is 30.7 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 11742? ▼
In ZIP code 11742, approximately 83.6% of occupied housing units are owner-occupied and 16.4% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 11742? ▼
The poverty rate in ZIP code 11742 is 5.6% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.