Nye has residences in the Studio City neighborhood of Los Angeles, in New York City, and on Mercer Island near Seattle.
His California house is solar-powered, and often feeds extra power back into the public power grid, something he enjoys showing visitors.

Nye and his neighbor, environmental activist/actor Ed Begley, Jr., have engaged in a friendly competition "to see who could have the lowest carbon footprint", according to Begley.
Nye often appeared on Begley's HGTV/Planet Green reality show Living with Ed.

In July 2012, Nye supported President Barack Obama's reelection bid.
He frequently consulted with Obama on science matters during Obama's presidency, and famously took a selfie with him and Neil deGrasse Tyson at the White House.
Nye attended the 2018 State of the Union Address after being invited by Oklahoma Congressman Jim Bridenstine.
Nye's attendance drew scrutiny due to Bridestine's "history of expressing climate change skepticism," but Nye defended him: "While the Congressman and I disagree on a great many issues, we share a deep respect for NASA and its achievements and a strong interest in the future of space exploration.
My attendance tomorrow should not be interpreted as an endorsement of this administration, or of Congressman Bridenstine's nomination, or seen as an acceptance of the recent attacks on science and the scientific community."
Nye endorsed Jay Inslee's 2020 presidential campaign, but has not made another endorsement after Inslee suspended his campaign on August 21, 2019.

Nye married musician Blair Tindall on February 3, 2006; however, he annulled the relationship seven weeks later when the marriage license was declared invalid.
In 2007, Nye obtained a restraining order against Tindall after she broke into his house and stole several items, including his laptop computer, which she used to send defamatory emails impersonating Nye, and damaged Nye's garden with herbicide.
Tindall acknowledged killing the plants but denied being a threat to Nye.
Nye subsequently sued Tindall for $57,000 in attorney's fees after she allegedly violated the protective order.

In the 2017 PBS documentary Bill Nye: Science Guy, Nye revealed his family's plight of ataxia.
Due to his father's, sister's and brother's lifelong struggles with balance and coordination, Nye decided to not have children to avoid the chance of passing on the condition, even though he "dodged the genetic bullet" himself.

In July 2018, Nye played for the National League squad at the MLB All-Star Legends and Celebrity Softball Game.
After striking out in his first at-bat, he singled in the bottom of the third inning to a rousing ovation from the Nationals Park crowd.

Nye is a member of two trade unions.
Nye has residences in the Studio City neighborhood of Los Angeles, in New York City, and on Mercer Island near Seattle. His California house is solar-powered, and often feeds extra power back into the public power grid, something he enjoys showing visitors.
Nye and his neighbor, environmental activist/actor Ed Begley, Jr., have engaged in a friendly competition "to see who could have the lowest carbon footprint", according to Begley. Nye often appeared on Begley's HGTV/Planet Green reality show Living with Ed.
In July 2012, Nye supported President Barack Obama's reelection bid. He frequently consulted with Obama on science matters during Obama's presidency, and famously took a selfie with him and Neil deGrasse Tyson at the White House. Nye attended the 2018 State of the Union Address after being invited by Oklahoma Congressman Jim Bridenstine. Nye's attendance drew scrutiny due to Bridestine's "history of expressing climate change skepticism," but Nye defended him: "While the Congressman and I disagree on a great many issues, we share a deep respect for NASA and its achievements and a strong interest in the future of space exploration. My attendance tomorrow should not be interpreted as an endorsement of this administration, or of Congressman Bridenstine's nomination, or seen as an acceptance of the recent attacks on science and the scientific community." Nye endorsed Jay Inslee's 2020 presidential campaign, but has not made another endorsement after Inslee suspended his campaign on August 21, 2019.
Nye married musician Blair Tindall on February 3, 2006; however, he annulled the relationship seven weeks later when the marriage license was declared invalid. In 2007, Nye obtained a restraining order against Tindall after she broke into his house and stole several items, including his laptop computer, which she used to send defamatory emails impersonating Nye, and damaged Nye's garden with herbicide. Tindall acknowledged killing the plants but denied being a threat to Nye. Nye subsequently sued Tindall for $57,000 in attorney's fees after she allegedly violated the protective order.
In the 2017 PBS documentary Bill Nye: Science Guy, Nye revealed his family's plight of ataxia. Due to his father's, sister's and brother's lifelong struggles with balance and coordination, Nye decided to not have children to avoid the chance of passing on the condition, even though he "dodged the genetic bullet" himself.
In July 2018, Nye played for the National League squad at the MLB All-Star Legends and Celebrity Softball Game. After striking out in his first at-bat, he singled in the bottom of the third inning to a rousing ovation from the Nationals Park crowd.
Nye is a member of two trade unions.
Bill Nye