No. In area Union county is the largest, and in population the Pulaski county. Little Rock isn't even a county. It's a city.
Pulaski county
Count Pulaski in Little Rock, Arkansas
11
According to census.gov, Pulaski County, Arkansas, has the most population at 373,911 people in 2007.
There are 75 counties in Arkansas. Pulaski County, which includes Little Rock, is the most populous county in Arkansas with a population of 392,000.
808 square miles
Click the link.
Tim Griffin is the representative from Pulaski County in the United States House of Representatives. Congressman Griffin is a member of the House Ways and Means Committee.
At least 12 same-sex couples were issued marriage licenses in Pulaski County on June 26, 2015.Previously, 125 same-sex couples married in Pulaski County on May 12, 2014, the first business day after same-sex marriage was temporarily legalized in Arkansas by court order.
From the Pulaski County Clerk's Office at 401 West Markham.
The address of the Pulaski County Historical Society Inc is: Po Box 251903, Little Rock, AR 72225