Chipmunks are small striped rodents that belong to the squirrel family. You are looking at a kind of squirrel, not a separate animal group.
They share a family tree with squirrels, ground squirrels, and other close cousins in Sciuridae and Rodentia.

That family connection explains why chipmunks and squirrels look somewhat alike, yet still seem different in size, movement, and behavior.
Chipmunks are usually smaller, more striped, and more likely to stay close to the ground. Many squirrels spend more time in trees.
Where Chipmunks Fit In The Animal Family

Chipmunks sit in a specific branch of the sciuridae family, which also includes squirrels and ground-dwelling relatives. Their fossil history reaches back to the early Miocene.
Modern chipmunks belong to the Marmotini tribe and Tamiina subtribe.
Why Chipmunks Are Squirrels, Not Just Squirrel-Like
Chipmunks are part of the same squirrel family within Rodentia. They share traits like sharp front teeth, fast reflexes, and food-caching behavior.
Sciuridae, Rodentia, And The Place Of Tamiina, Tamias, Eutamias, Neotamias, And Marmotini
Within sciuridae, chipmunks belong in Tamiina, a subtribe inside Marmotini. Modern classification recognizes living chipmunk lineages in Tamias, Eutamias, and Neotamias.
This reflects both their shared ancestry and their regional differences.
Closest Relatives And How They Compare

You can most closely compare chipmunks to other squirrel relatives, especially species that spend time on or near the ground. Tree-living, gliding, and burrow-dwelling forms all sit nearby on the family tree.
Ground Squirrels Vs Tree Squirrels
Ground squirrels are among the nearest relatives to chipmunks, and they often share burrows and cheek pouches.
Tree squirrels are still close cousins. They usually have a more arboreal lifestyle, a longer bushy tail, and fewer of the stripe patterns that make chipmunks stand out.
How Flying Squirrels And Prairie Dogs Fit In
Flying squirrels are also squirrel relatives, adapted for gliding from tree to tree.
Prairie dogs belong to the same broad squirrel family as chipmunks. They share a rodent body plan even though their behavior and habitat look very different.
Why Eastern Gray Squirrels Look Different
The eastern gray squirrel is a familiar squirrel species that shows how diverse the family can be.
A chipmunk may resemble a striped squirrel in color pattern and shape, yet it usually looks smaller, lower to the ground, and more compact than a tree-dwelling cousin.
Traits That Show The Family Resemblance

Chipmunks store food, hide in cover, and live in burrows, which makes the family connection easy to spot.
These traits help chipmunks thrive in forests and other habitats where quick access to shelter and seed sources matters.
Cheek Pouches, Hoarding, And Food Storage
Chipmunks use cheek pouches to carry seeds and other food back to safe places. This supports hoarding and long-term food storage.
According to Wikipedia’s chipmunk overview, this caching behavior helps them survive winter and supports forest ecosystems by moving seeds around.
Burrows And Life Close To Ground Cover
Chipmunks spend much of their time near ground cover, where they can dash into burrows quickly.
Their underground homes often include nesting chambers, food rooms, and escape routes.
Chipmunk Diet And Everyday Behavior
A typical chipmunk diet includes seeds, nuts, fruits, buds, insects, and other plant matter.
Their alert daytime behavior makes them active little foragers that fit well into woodland life and human-altered landscapes.
Notable Species And Where They Live

Different chipmunk species live across North America and, in one case, Asia.
The chipmunk genus and species list shows how broad the group is, from familiar woodland animals to more regional forms.
Eastern Chipmunk And Tamias striatus
The eastern chipmunk, or Tamias striatus, is the best-known eastern North American form.
It is the classic backyard and woodland chipmunk, with bold stripes and a strong habit of storing food in burrows.
Least, Yellow-Pine, California, Alpine, And Western Chipmunks
The least chipmunk (Tamias minimus), yellow-pine chipmunk, california chipmunk, alpine chipmunk (Tamias alpinus), and western chipmunk show how adaptable the group is.
Most of these species live in western North American habitats, from forests to mountains and drier landscapes.
Siberian Chipmunk And Other Regional Lineages
The siberian chipmunk (Tamias sibiricus) stands out because it lives primarily in Asia. Most chipmunk species live elsewhere.
The tamias rufus lineage shows how chipmunks split into regional branches. Each lineage adapts to its own range and habitat.