Boppelsen is a municipality in the district of Dielsdorf in the canton of Zürich in Switzerland.

Boppelsen is first mentioned in 1130 as de Bobpinsolo.

Boppelsen has an area of 3.9 km (1.5 sq mi). Of this area, 42.6% is used for agricultural purposes, while 47.4% is forested. Of the rest of the land, 9.7% is settled (buildings or roads) and the remainder (0.3%) is non-productive (rivers, glaciers or mountains).

The municipality is located in the hills above the Furttal.

Boppelsen has a population (as of 31 December 2020) of 1,472. As of 2007, 11.2% of the population was made up of foreign nationals. Over the last 10 years the population has grown at a rate of 41.7%. Most of the population (as of 2000) speaks German (92.2%), with Portuguese being second most common ( 2.7%) and French being third ( 0.7%).

In the 2007 election the most popular party was the SVP which received 39.8% of the vote. The next three most popular parties were the FDP (16.9%), the CSP (15.1%) and the SPS (10.3%).

The age distribution of the population (as of 2000) is children and teenagers (0–19 years old) make up 21.6% of the population, while adults (20–64 years old) make up 68.4% and seniors (over 64 years old) make up 10%. About 87.8% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either university or a Fachhochschule).

Boppelsen has an unemployment rate of 1.44%. As of 2005, there were 112 people employed in the primary economic sector and about 17 businesses involved in this sector. 21 people are employed in the secondary sector and there are 8 businesses in this sector. 82 people are employed in the tertiary sector, with 31 businesses in this sector. The historical population is given in the following table:

year	population
1634	168
1709	206
1850	334
1900	256
1910	234
1950	292
2000	1,018

• Official website (in German)
• Boppelsen in German, French and Italian in the online Historical Dictionary of Switzerland.