Residential delivery area · Massachusetts
ZIP Code 01520: Holden, MA
ZIP code 01520 uses the postal name Holden, Massachusetts and lies entirely in Worcester County (Census 2020 ZIP-county file). About 17,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $148,125 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Holden · its only residential ZIP
- County
- Worcester County
- Metro area
- Worcester, MA
- House district
- MA-2 119th Congress
- State
- Massachusetts
- Time zone
- Eastern
- Land area
- 18.8 sq mi · 898 people per sq mi
Where is ZIP code 01520?
01520 centers on 42.334°, -71.854° and covers 18.8 square miles of land plus 0.7 of water. It borders 7 ZIP codes: 01522, 01606, 01609, 01583, 01602, 01605, 01612.
The map draws ZIP code areas only. For the streets inside 01520, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 01520 compare with the rest of Worcester County?
| Measure | 01520 | In Worcester County | In MA |
|---|---|---|---|
| People (ACS 2020-2024) | 16,912 | 16th of 87 | 162nd of 539 |
| Median household income | $148k | 8th of 67 | 79th of 406 |
| Median home value | $478k | 18th of 77 | 265th of 449 |
Its median household income is higher than in 96% of U.S. residential ZIP codes, and it is denser than 77% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 01520?
The 2020 Census counted 16,394 people in 01520; the ACS, which samples households over 2020-2024, estimates 16,912. Between the 2010 and 2020 censuses its population grew 17.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 16,912
- 2020 Census count
- 16,394+17.1% since 2010 (13,997)
- Households
- 5,978
- Median age
- 41.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 01520?
Of the 16,912 people the ACS estimates in 01520, 25.3% are under 18 and 18.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (84.0%).
- Under 1825.3%
- 18 to 6455.9%
- 65 and older18.9%
- White, not Hispanic84.0%
- Other or two or more5.7%
- Hispanic or Latino4.8%
- Black, not Hispanic3.1%
- Asian, not Hispanic2.4%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 01520 earn?
Median household income is $148,125 (ACS 2020-2024), the 8th highest of the 67 ranked ZIP codes in Worcester County. It is not measurably different from 2015-2019 ($134,391 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $148,125
- Income per person
- $58,097
- Below the poverty line
- 3.9%
- Unemployed (of the labor force)
- 4.4%
- Adults 25+ with a bachelor's degree
- 57.5%
- Adjusted gross income per tax return, 2022
- $116,9118,280 returns; wages 73% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 01520?
FHFA's house price index for 01520, built from repeat sales and appraisals of the same homes, rose 92% from 2015 to 2025 and rose 51% from 2020 to 2025, and moved +3.4% in 2025.
- Median home value (owners' estimate)
- $478,300
- Median gross rent
- $1,775
- Homes owned by their occupants
- 86.3%
- Housing units
- 6,008
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 01520?
284 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance50
- Construction40
- Retail trade31
- Other services (except public administration)31
- Professional, scientific, and technical services29
- Administrative and support and waste management and remediation services24
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 01520?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 01522 | Jefferson | 3,152 | $101k | 2.9 mi |
| 01606 | Worcester | 22,844 | $92k | 3.4 mi |
| 01609 | Worcester | 22,047 | $68k | 3.6 mi |
| 01583 | West Boylston | 7,606 | $106k | 4.4 mi |
| 01602 | Worcester | 27,092 | $92k | 4.5 mi |
| 01605 | Worcester | 30,579 | $55k | 4.6 mi |
| 01612 | Paxton | 5,002 | $134k | 4.6 mi |
| 01608 | Worcester | 4,932 | $46k | 5.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.