| Official Name: | Town of Lakeside, Colorado |
| Settlement Type: | Statutory Town |
| Mapsize: | 250px |
| Coordinates: | 39.7772°N -105.0558°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Jefferson County[1] |
| Government Type: | Statutory Town |
| Established Title2: | Incorporated |
| Established Date2: | November 25, 1907[2] |
| Unit Pref: | Imperial |
| Area Footnotes: | [3] |
| Area Total Sq Mi: | 0.25 |
| Area Land Sq Mi: | 0.19 |
| Area Water Sq Mi: | 0.06 |
| Area Total Km2: | 0.64 |
| Area Land Km2: | 0.49 |
| Area Water Km2: | 0.16 |
| Elevation Ft: | 5364 |
| Population As Of: | 2020 |
| Population Footnotes: | [4] |
| Population Total: | 16 |
| Population Density Sq Mi: | auto |
| Population Density Km2: | auto |
| Timezone: | MST |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Postal Code Type: | ZIP code |
| Postal Code: | Denver CO 80212 |
| Area Code: | Both 303 and 720 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2412865 |
The Town of Lakeside is a Statutory Town in Jefferson County, Colorado, United States. The town population was 16 at the 2020 United States Census, making Lakeside the least populous municipality in the State of Colorado. Lakeside is immediately west of the City and County of Denver, the most populous municipality in the state. The Alcott Post Office (ZIP Code 80212) serves Lakeside.[5]
The town's namesake lake is Lake Rhoda, which covers 20% of its total area. A year after its incorporation on November 12, 1907, the Lakeside Amusement Park, nicknamed "White City", opened on the eastern shores. Both town and park were founded by a syndicate led by prominent Denver brewer Adolph Zang, who endeavored to build the resort just across the county line from Denver, and incorporated to move beyond the reach of Denver liquor laws. A shopping mall, Lakeside Center, was built in 1956 on the southern shore, but fell into financial troubles due to lack of business around the turn of the century[6] and was converted into a Walmart and strip mall circa 2010. The amusement park, shopping area, and lake occupy almost all of the tiny municipality. Residences are limited to a handful of houses in the southeast corner of the town occupied by employees of the amusement park.
According to the United States Census Bureau, the town has a total area of 0.2sqmi, of which, 0.2sqmi of it is land and 0.1sqmi of it (20.83%) is water.