Rats are rodents in the genus Rattus. When you ask where rats live, the most useful answer is that they settle almost anywhere they can find food, water, and shelter.
Different types of rats have spread across the globe, especially in places shaped by people. Their range is both natural and shaped by human activity.
You will usually find rats closest to human activity, from city streets and sewers to farms, warehouses, attics, and garden edges. The location depends on the species, climate, and access to nesting spots. Some rats are common in dense urban areas while others stay closer to forests, fields, or tropical islands.
Where Rats Are Found Around The World
Rats originated in parts of Asia. A few species now live far beyond their original range.
The brown rat and black rat are the best-known examples. Both spread with trade, travel, and settlement.
Continents
Rats live on every continent except Antarctica. The strongest populations often cluster in urban areas and ports.
The brown rat, or Rattus norvegicus, and the black rat, or Rattus rattus, live virtually everywhere people have settled. The brown rat is especially common in temperate cities.
A global rat distribution map shows how widely these rodents have expanded.
Cities and Human Settlements
Cities, suburbs, farms, and shipping hubs provide rats with steady food and shelter. These rodents thrive near trash, stored grain, drains, and building foundations.
Places With Few or No Rats
Rats rarely live in harsh, remote, or isolated areas with little food and limited shelter. Very cold environments, open terrain with few hiding places, and places with strict biosecurity support fewer rat populations.
Why Rats Thrive Near People
Human environments create ideal conditions for rat species in the family Muridae. Food scraps, warm nesting sites, sewer systems, and year-round shelter help brown rats and black rats survive in places where wild conditions might be harder.
Which Rat Species Live In Different Places
Different types of rats link to different habitats, even when they share the same city or region. The two species you hear about most are the brown rat and the black rat.
Each has its own preferred conditions.
Brown Rat or Norway Rat Habitats
The brown rat, also called the Norway rat, thrives in temperate regions. It often lives in sewers, basements, fields, and buildings.
Rattus norvegicus associates strongly with human settlements and survives well in urban environments. Wildlife and pest references may also call it a Norway rat.
Black Rat or Roof Rat Habitats
The black rat, or roof rat, prefers warmer climates and often climbs well enough to use roofs, trees, wires, and upper parts of buildings. People also call black rats ship rats because they traveled widely by sea.
They remain common around ports and coastal settlements.
Other Common Names
The same rat species can appear under several names, including common rat, sewer rat, wharf rat, ship rat, and roof rat. These labels often reflect where the animal lives or how people first encountered it.
Where Rats Hide In and Around Homes
Around homes, rats choose places that stay dark, quiet, and close to food. Safety and routine shape rat behavior, so hidden voids and sheltered outdoor spots attract them.
Attics, Walls, Basements, and Crawlspaces
Attics, wall voids, basements, and crawlspaces give rats warmth and cover. These spaces are especially attractive when they are cluttered, rarely disturbed, or near food storage and plumbing access.
Burrows, Yards, Sewers, and Outdoor Cover
Rats also live outdoors in burrows under sheds, decks, bushes, and foundations. Some rats dig burrows or nest beneath rocks, logs, and other shelter.
Brown rats readily use sewers and drains.
Rat Nests and Daytime Shelter
Rat nests often use shredded paper, insulation, fabric, or plant material. Many rats are nocturnal, so they hide during the day and move more freely at night.
How To Tell If Rats Are Nearby
You can often spot rats before you see one directly. Droppings, gnaw marks, burrows, and scratching sounds often signal rodent activity.
Signs of Rat Activity Indoors and Outdoors
Signs of rats include droppings, greasy rub marks, shredded nesting material, holes near walls, and damaged food packaging. Outdoors, you might see burrow entrances, runways in grass, or disturbed soil near trash and structures.
Health Risks Linked to Rat Infestations
Rat infestations can spread contamination through urine, droppings, and food access. Rats have been linked to diseases such as leptospirosis, hantavirus, and bubonic plague, so sanitation matters as much as trapping or exclusion.
When Rat Control Becomes Necessary
You need rat control when you see repeated signs of rats, hear regular nocturnal activity, or find fresh droppings in the same places.
Act quickly to limit damage and reduce health risks. Swift action also keeps small problems from turning into larger rodent infestations.
