GENERAL

• World’s First National Park
• A designated World Heritage Site
• A designated Biosphere Reserve Site
• 3,472 square miles or 8,987 square km
• 2,219,789 acres or 898,317 ectares
• 63 air miles north to south (102 km)
• 54 air miles east to west 87 km)
• 96 % in Wyoming
• 3 % in Montana
• 1 % in Idaho
• Highest Point: 11,358 ft / 3,462 m (Eagle Peak)
• Lowest Point: 5,282 ft / 1,610 m (Reese Creek)
• Larger than Rhode Island and Delaware combined
• Approximately 5% of park is covered by water; 15% is grassland; and 80% is forested
• Precipitation ranges from 10 inches (26 cm) at the north boundary to 80 inches (205 cm) in the southwest corner
• Temperatures Average at Mammoth: January: 9° F/-13 C in 
  July: 80° F/27 C 
• Records:
  High: 99°F/37 C, 2002 (Mammoth)
  Low Temp: -66° F/-54 C (West Entrance, Riverside Station 1933)

WILDLIFE

• 7 species of native ungulates
• 2 species of bears
• Approximately 67 species of other mammals
• 322 recorded species of birds (148 nesting species)
• 16 species of fish (5 non-native)
• 6 species of reptiles
• 4 species of amphibians
• 1 threatened species: Canada lynx
  1 endangered species: gray wolf (designated an experimental and non-essential population in Yellowstone National Park; proposed for delisting in 2008)

FLORA

• 7 species of conifers
• Approximately 80% of forest is comprised of lodgepole pine
• Approximately 1,100 species of native vascular plants
• More than 199 species of exotic (non-native) plants
• 186 species of lichens
• At least 406 species of thermophiles (only 1% of hydrothermal areas inventoried) 

GEOLOGY

• An active volcano
• Approximately 1,000–3,000 earthquakes annually
• Approximately 10,000 thermal features
• More than 300 geysers
• One of the world’s largest calderas, measuring 45 by 30 miles (72 by 48 km)
• One of the world's largest petrified forests
• Approximately 290 waterfalls, 15 ft. or higher, flowing year-round
• Tallest waterfall: Lower Falls of the Yellowstone River at 308 ft. (94 m)

YELLOWSTONE LAKE

• 131.7 sq. miles (35,400 hectares) of surface area
• 141 miles (177 km) of shoreline
• 20 miles (32 km) north to south
• 14 miles (23 km) east to west
• Average depth: 140 feet (43 m)
• Maximum depth: about 410 feet (122 m)

CULTURAL RESOURCES

• 1,000+ documented archeological sites
• 1,106 historic structures
• 6 National Historic Landmarks (Obsidian Cliff & 5 buildings)
• Nearly 200,000 museum objects
• 20,000 titles in Park Research Library
• 2,500 linear feet of historic documents
• About 90,000 photographic prints and negatives
• 21 Affiliated American Indian tribes

LATITUDE / LONGITUDE / UTM
(NOTE: ALL UTMS ARE "Nad83")

1. Center of the park:

44 36 53.25 (Lat) -110 30 03.93 (Long)
UTM Zone 12: 4940281 N, 539584 E

2. Old Faithful:

44 27 37.31 (Lat) -110 49 41.59 (Long)
UTM Zone 12: 4923021 N, 513665 E

3. Mammoth:

44 58 34.79 (Lat) -110 42 03.37 (Long)
UTM Zone 12: 4980364 N, 523580 E

4. Entrances:

East Entrance:

44 29 18.42 (Lat) -110 00 13.80 (Long)
UTM Zone 12: 4926609 N, 579209 E

North Entrance:

45 01 46.39 (Lat) -110 42 31.32 (Long)
UTM Zone 12: 4986275 N, 522949 E

Northeast Entrance:

45 00 12.09 (Lat) -110 00 04.62 (Long)
UTM Zone 12: 4983809 N, 578510 E

South Entrance:

44 07 56.97 (Lat) -110 39 52.83 (Long)
UTM Zone 12: 4886643 N, 526824 E

West Entrance:

44 39 30.27 (Lat) -111 05 49.87 (Long)
UTM Zone 12: 4945010 N, 492295 E

ROADS AND TRAILS

• 5 park entrances
• 466 mi / 750 km of roads (310 mi/499 km paved miles)
• 950 mi / 1,529 km of backcountry trails
• 92 trailheads
• 301 backcountry campsites

VISITATION

• 2007 - 3,151,342 visitors
• Record year: 2007 – 3,151,342 visitors
• Winter visitors: Approximately 99,775

FACILITIES

• 9 visitor centers and museums
• 9 hotels/lodges (2,000+ hotel rooms/cabins)
• 7 NPS-operated campgrounds (454 sites)
• 5 concession-operated campgrounds (1,700 sites)
• 1,500+ buildings (NPS and concessions)
• 52 picnic areas
• 1 marina
• 13 self-guiding trails 

EMPLOYEES

• During the summer:
  Approximately 800 National Park Service (about 400 year-round)
• Approximately 3,500 work for concessions

MAILING ADDRESS

National Park Service
P.O. Box 168
Yellowstone National Park, WY 82190-0168
Internet Website: www.nps.gov/yell/