State Farm® Insurance Agent Mark Llewellyn
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What our customers say about us...
stella chadd
May 29, 2026
"Deb Croissant is the best! She is intelligent, professional and yet compassionate! A rare combination in today's business world. We love our State Farm! Stella C."
Suzanne Greenwood
March 13, 2026
"⭐️⭐️⭐️⭐️⭐️ Outstanding Service – Truly “Like a Good Neighbor”
I cannot say enough good things about the team at Mark Llewellyn’s State Farm Agency, especially Deb Croissant. The level of care and service I received was absolutely incredible.
I moved to Colorado about 9 years ago, and if I’m being honest, I haven’t always felt that sense of someone truly looking out for me or taking the time to help in a genuine way. That changed the moment I worked with Deb. She was kind, patient, knowledgeable, and incredibly helpful. She didn’t just answer questions — she made sure I fully understood everything and that I felt confident in my coverage.
Deb went above and beyond with customer service. She treated me like more than just a policy number. She treated me like a person who mattered. And in today’s world, that kind of service is rare.
For the first time since moving here, I truly felt what the slogan means: “Like a good neighbor, State Farm is there.”
If you’re looking for an insurance agency that actually cares and takes the time to help you, I highly recommend Mark Llewellyn’s State Farm office. And if you get the chance to work with Deb Croissant, you are in the best hands possible.
Thank you for reminding me what real customer service feels like! I’m beyond thankful!"
Heide Bell
September 9, 2025
"Deb helped us with our homeowners and auto insurance. She was thorough, explaining all the details of the policies and answered all of our questions. I highly recommend State Farm and Deb."
Alan Hendrix
January 28, 2025
"Very responsive and on time help. Like always. Far away the best State Farm agency I have been with and I think I’m up to now three. I believe I outlived my previous agents, but the good thing is I have a alibi as to my whereabouts."
Jane Bradley
December 5, 2024
"Deb was very easy to deal with when we added a new car to our policy. She gave me various options so that I could make the best decision. I highly recommend Llewellyn Insurance."
William Anderson
June 26, 2024
"I wanted to add a Homeowners policy to my existing account. Deb Croissant was exceedingly helpful in assisting me in accomplish this. She provided me with numerous quotes in an effort to fulfill my needs. She was extremely professional and helpful in answering all my questions and idiosyncrasies in providing me with exactly the Homeowners policy I desired . I would highly recommend her to anyone needing an insurance policy with a personal touch."
Amanda “Mandy” Edwards
November 17, 2023
"I love working with Deb she always takes great care of us!!"
T W
September 7, 2023
"Customer Service is garbage."
Brady Gordon
August 10, 2023
"Great folks, easy to work with especially Deb who handles my auto insurance!"
Colby Gordon
July 29, 2023
"A great place to get insurance. We've had our insurance from State Farm for many years and they've always been fine to work with. At this office we always work with Deb who does a good job. State Farm is quite a bit cheaper than some insurance agencies and is always professional."
Micah Pope
July 18, 2023
"Megan has been super helpful as she has worked with me on my insurance needs--car, house, business. She is always quick to respond to my requests with answers and guidance!"
Alex Quintanilla
April 7, 2023
"Absolutely terrible customer service. Completely unprofessional."
Hal Brown
March 15, 2023
"I have been a customer of Mark Llewellyn’s agency and State Farm for over 35 years for all my policies, including my home, autos, recreational vehicles (camping trailer, boat & ATVs ), house and apartment rentals, farm & ranch policy, and umbrella policy. Over the years, I have worked with Mark and many of Mark’s fine office staff and have always had a positive and friendly experience with them. For a number of years now, I have worked with Deb Croissant, who always goes above and beyond to take care of my requests or questions in a professional, timely, and friendly manner. I look forward to another 35 years of great & friendly service!"
Stub Allison
March 7, 2023
"I don’t know how to start this except one word and that is - DEB!!!
Sorry Mark. 😀
Seriously though, I cannot rave about either of them enough!!!
I have had the same insurance provider for my entire life and thought I was happy until my auto insurance rates rose to a level I could not understand or sustain.
So, I shopped around online and at the time, STATE FARM absolutely had the most competitive rates, so switching was easy.
But since I did it online, I was then presented with a list of agents in my area to just randomly select from.
I picked Mark that day and I’m telling you, it was the best thing I ever did.
When you pick Mark, you also get Deb!!!
Did I mention Deb?
I randomly walked into their office today with no phone call or appointment wanting to see about also switching my home owners insurance. Deb dropped what she was doing and spent the next 2.5 hours with me getting that done.
I almost hugged her when we were done!!!
Results may vary but switching from my old provider to STATE FARM is saving me $400/month on my multi-line policy.
However, the real win here was choosing Mark Llewellyn as my agent. I already feel more of a connection to that office and the people in it than I ever did to my old one.
You can’t go wrong."
Natalie Belveal
January 10, 2023
"Wonderful prompt service. Mark as been my agent since I started driving. I don’t even live in Greeley but keep him as my agent. He and the staff are always there for me."
Dave Rose
November 4, 2022
"Just absolutely great customer service. We have had a large issue and a couple of small ones and Mark Llewellyn's State Farm office has always been there to help. And Deb is awesome. Thank you."
Baylee Brown
September 14, 2022
"We've been with Mark Llewellyn's office for years. Most often, we are in contact with Deb. She is always incredibly kind, detail oriented, and promptly responds to any questions or concerns we have. We always feel like we are in good hands and that she will go the extra mile to make sure our needs are met. We would recommend this office to anyone looking for a trustworthy insurance agent with top notch customer service!"
Sue Anschutz
June 26, 2022
"I have been with State Farm since I started driving - a long time ago. I moved to Mark Llewellyn’s agency when my agent retired a number of years ago as his office maintains the same high level of service for auto and home insurance. Deb is a top-notch assistant in that office! If you’re looking for a reliable, professional and competent agent for your insurance needs, this is the place to be!"
Richard Evans
June 1, 2022
"Been with Mark since 1984, he and his office staff are very good representatives for State Farm Insurance. We have houses, Cars, Business, umbrella and life insurance, His agency wouldn't have all of our trust if they didn't do what they can for us and always have. Try them you will like them!"
Allen Jost
May 31, 2022
"We just went through a complicated merge of two policy holders. Deb was extremely helpful. She also anticipated issues and resolved many of them before they even came to our attention. This is a great insurance agency. We feel like they are monitoring our insurance needs to provide the best coverage while getting us optimal pricing considerations."
THEA HORA
April 29, 2022
"Mark is an excellent State Farm agent, one of the best in my opinion. I usually work with Deb who is also outstanding. The team does what is best for their client every single time. I highly recommend State Farm and Mark Llewellyn in particular."
Mark Miller
October 15, 2021
"Mark takes good care of us."
Joangelia jones
September 24, 2021
"I’ve been with State Farm for over 30 years and has never had a problem with them. I just refinanced my home my mortgage company was trying to sell me a house protection Life insurance I didn’t quite understand what they were trying to sell me, so I Called my State Farm agency for advice. They took the time and educated me on that type of insurance that they were trying to sell me and I was able to make a better decision that benefited me more. After 30 years I am still a very happy customer. Thank you State Farm."
AJ
March 27, 2021
"Gee .. I haven't seen these people in over a year now but the customer service I have received over the phone is top rate!! I hope someday I can put faces and names together ❤"
Nick Bode
January 21, 2021
"I have been a client of Mark Llewellyn's office since I started driving in 1996, and I couldn't be more pleased with the attention to detail and the service.
Deb has always gone out of her way to help me with claims, and has recently helped me with new coverage for my home. Deb makes the insurance process easy and painless.
I cannot recommend Deb and the team at Mark Llewellyn's State Farm office enough."