Geography of Broomfield County, Colorado

Broomfield County, located in the north-central part of Colorado, is a relatively small but dynamic region characterized by its unique geography, diverse ecosystems, and vibrant communities. From its rolling plains and tranquil lakes to its scenic open spaces and mountain vistas, Broomfield County offers a range of outdoor recreational opportunities and a high quality of life. In this comprehensive exploration, we’ll delve into the geography, climate, rivers, lakes, and other notable features of Broomfield County.


According to Topb2bwebsites, Broomfield County covers an area of approximately 33 square miles (85 square kilometers) and is situated between the cities of Denver and Boulder. It is the smallest county in Colorado by land area and is entirely landlocked, with no natural borders such as rivers or lakes.

The county’s geography is characterized by its rolling plains, which gradually rise in elevation as they approach the foothills of the Rocky Mountains to the west. The eastern part of the county is predominantly urban and residential, while the western part is more rural and undeveloped, with open spaces and agricultural land.

Broomfield, the county seat and largest city, is located near the center of the county and serves as a hub for commerce, industry, and culture. Other communities in the county include Interlocken, Northmoor, and The Broadlands, each with its own unique character and amenities.


Broomfield County experiences a semi-arid climate, characterized by hot, dry summers and cold, snowy winters. The region’s climate is influenced by its elevation, topography, and proximity to the Rocky Mountains.

Summers in Broomfield County are typically warm and dry, with average temperatures ranging from the mid-70s to low 90s Fahrenheit (around 24 to 35 degrees Celsius). Heatwaves are common during the summer months, with temperatures occasionally exceeding 100 degrees Fahrenheit (38 degrees Celsius). Thunderstorms are also frequent, bringing heavy rainfall, lightning, and gusty winds to the area.

Winters in Broomfield County are cold and snowy, with average temperatures ranging from the low 20s to mid-40s Fahrenheit (around -6 to 7 degrees Celsius). Snowfall is common, particularly in the higher elevations and western parts of the county, with several inches of snow accumulating throughout the winter months. Most precipitation falls as snow or rain, with occasional winter storms bringing a mix of snow, sleet, and freezing rain to the area.

Spring and fall are transitional seasons in Broomfield County, with mild temperatures and changing foliage making them pleasant times to visit. Spring brings the blooming of wildflowers and the greening of the landscape, while fall showcases the vibrant colors of changing leaves and the harvest of agricultural crops.

Annual precipitation in Broomfield County averages around 15 to 20 inches (about 380 to 510 millimeters), with rainfall distributed fairly evenly throughout the year. Thunderstorms are most common in the summer months, while winter storms and frontal systems can bring heavy snowfall and occasional flooding.

Rivers and Lakes:

While Broomfield County does not have any natural rivers or lakes within its borders, it is located near several major waterways that provide valuable resources for the region’s residents and wildlife.

The South Platte River, one of the major rivers in Colorado, flows just to the north of Broomfield County, winding its way from its headwaters in the Rocky Mountains to its confluence with the North Platte River in Nebraska. The South Platte River is an important source of water for agriculture, industry, and recreation in the region, supporting a variety of fish and wildlife species.

In addition to the South Platte River, Broomfield County is also located near several reservoirs and lakes, including Standley Lake, which lies just to the west of the county. Standley Lake is a popular destination for fishing, boating, and picnicking, as well as wildlife viewing and photography.

Open Spaces and Parks:

Broomfield County is home to several parks, open spaces, and natural areas that provide opportunities for outdoor recreation and relaxation. These include:

  • The Broomfield Commons, a large park located near the center of the county, which features playgrounds, sports fields, picnic areas, and walking trails.
  • The Carolyn Holmberg Preserve at Rock Creek Farm, a scenic natural area located in the eastern part of the county, which offers hiking, birdwatching, and wildlife viewing opportunities.
  • The McKay Lake Open Space, a tranquil lake located in the western part of the county, which provides opportunities for fishing, boating, and nature walks.

These parks and open spaces serve as valuable green spaces for residents and visitors to enjoy, providing opportunities for outdoor recreation, exercise, and relaxation in a natural setting.

Rocky Mountain Foothills:

To the west of Broomfield County, the landscape rises gradually in elevation as it approaches the foothills of the Rocky Mountains. These foothills are characterized by rugged terrain, steep slopes, and dense forests of pine and fir.

The Rocky Mountain foothills offer opportunities for hiking, mountain biking, and wildlife viewing, with numerous trails and scenic overlooks providing access to the stunning mountain vistas. Popular destinations in the foothills include Eldorado Canyon State Park, Golden Gate Canyon State Park, and Rocky Mountain National Park, which offer a wide range of outdoor activities and recreational opportunities for visitors to enjoy.


In conclusion, Broomfield County, Colorado, offers a unique blend of urban convenience and outdoor adventure, with its diverse geography, mild climate, and abundance of parks and open spaces. Whether exploring the rolling plains, hiking in the Rocky Mountain foothills, or enjoying the amenities of the city, Broomfield County has something to offer for residents and visitors alike. With its stunning natural beauty and vibrant communities, Broomfield County is truly a gem of the Rocky Mountain region.