Trees Count Registration : NYC Parks

Trees Counted

35,472

Participating Volunteers

2,123

Parks Surveyed

322

Just as the US Census takes stock of our human population every ten years, so too does New York City for its tree population. Since 1995, NYC Parks has conducted decadal counts of street trees (adding park trees in the most recent count), and it’s now time to get an update on our urban forest!

Trees Count 2025 is the fourth participatory inventory of NYC's urban trees. We will record the location, size, species, and condition of all public street and park trees in New York City.

How You Can Get Involved

We’re seeking New Yorkers to help us count all the trees in city parks across New York City! This opportunity only comes every 10 years, so don’t miss out on your chance to measure, count, and check up on our park trees to see how they’re doing.

We will provide all the necessary materials and training. No experience is necessary, just willingness to give your trees a nice, big hug!

What to Expect

When you attend one of our Trees Count events in a NYC Park, you will receive a tote bag with all the materials needed to count trees! Next, we'll provide a 20-minute training session that includes the basics of tree identification and how to measure and assess each tree.

Using our Tree Census app, you’ll split up into different zones within the park to start counting trees! You should expect to count trees for approximately one to two hours. After completing your first training event, you are welcome to continue counting trees on your own in smaller parks across the city.

To recognize our most dedicated volunteers, Trees Count 2025 will award prizes to participants who successfully complete certain milestones within a designated time period. Learn more about the milestones and eligibility.

Upcoming Trees Count Events

More events are added regularly, so please keep checking this page for updates!

Name	Registration Dates
10/20: Trees Count at Fort Independence Playground	10/6/2025 - 10/17/2025	Sign up
10/21: Trees Count at Haffen Park	10/6/2025 - 10/17/2025	Sign up
10/23: Trees Count at Macombs Dam Park	10/6/2025 - 10/21/2025	Sign up
10/27: Trees Count at Pelham Bay Park	10/6/2025 - 10/24/2025	Sign up
11/02: Trees Count at Van Cortlandt Park with the Urban Park Rangers	10/10/2025 - 10/31/2025	Sign up

Name	Registration Dates
10/17: Trees Count at Bensonhurst Park	9/26/2025 - 10/15/2025	Sign up
10/19: Trees Count at Amersfort Park	10/6/2025 - 10/17/2025	Sign up
10/26: Trees Count at Seth Low Playground with the Urban Park Rangers	10/5/2025 - 10/24/2025	Sign up
10/27: Trees Count at McKinley Park	10/6/2025 - 10/24/2025	Sign up
10/28: Trees Count at Canarsie Park	10/7/2025 - 10/24/2025	Sign up

Name	Registration Dates
10/21: Trees Count at Riverside Park	10/6/2025 - 10/17/2025	Sign up
10/24: Trees Count Meet Up at Highbridge Park (previous training required)	10/6/2025 - 10/22/2025	Sign up

Name	Registration Dates
10/13: Trees Count at Rockaway Community Park [Cancelled]	9/22/2025 - 10/10/2025	Registration has ended.
10/14: Trees Count at Juniper Valley Park	9/23/2025 - 10/10/2025	Registration has ended.
10/23: Trees Count Meet Up at Rainey Park (previous training required)	10/6/2025 - 10/21/2025	Sign up
10/26: Trees Count at Cunningham Park with the Urban Park Rangers	10/5/2025 - 10/24/2025	Sign up
10/26: Trees Count at Phil "Scooter" Rizzuto Park	10/5/2025 - 10/24/2025	Sign up
10/30: Trees Count at The Olde Towne of Flushing Burial Ground	10/9/2025 - 10/28/2025	Sign up

Name	Registration Dates
10/16: Trees Count at Wolfe's Pond Park	9/25/2025 - 10/14/2025	Sign up
10/25: Trees Count at Snug Harbor Cultural Center	10/1/2025 - 10/23/2025	Sign up

Why Do We Count Trees?

NYC Parks performs a comprehensive tree inventory every 10 years to understand our urban forest’s population characteristics and change over time. We use the data collected to develop new management and operational plans for all the trees across the city. The census also helps us identify areas where there is room for more trees so that we can expand our canopy equitably and increase the benefits that trees provide.

We also love to get New Yorkers involved because when people engage with their trees through the tree census, we build the next generation of tree stewards to understand, advocate, and care for the urban forest.

How the 2025 Census Works

Park Tree Census

We’re hosting tree census events to engage volunteers like you to help us count, measure, and identify every tree in every park across New York City.

We will provide on-site training and tree identification guides to make sure that our volunteers are confident to be as accurate as possible.

two people measuring the diameter of a large tree.

Street Tree Census

To count all of the street trees in New York City, Parks will be utilizing ground-based light detection and ranging (LiDAR) scans, captured on devices mounted on cars, to create three dimensional “digital twins” for each tree. These scans will be processed with machine learning algorithms to derive all sorts of important and cool metrics about our NYC street trees, including their size, species, condition, and location.

Get Involved

Large Groups

Bring your corporate group or large organization to Trees Count 2025! Find out how to get involved.

Find out how to get involved

trees count 2025 pins

Tree Census History

Learn more about the tree census efforts from 1995, 2005, and 2015 and see the results from each one.

View past TreesCount!
censuses

two people measure the diameter of a tree

Presenting Sponsors

Logos of Leon Levy Foundation and Bloomberg Philanthropies