With the album's release, Nelly and his "St. Lunatics" crew cemented the St. Louis sound firmly amongst other southern hip hop artists in the year 2000, such as Juvenile, Trina, Ludacris, OutKast, Three 6 Mafia and UGK.

Country Grammar also introduced the world to Nelly's unique musical style of pop-rap and radio "singalongs" with a Missouri twang.

The album's fourth and final single, "Batter Up" featuring St. Lunatics members Murphy Lee and Ali, achieved moderate chart success.

Country Grammar received positive reviews, with critics praising Nelly's vocal style and the album's production.

In 2016, Country Grammar became the ninth hip hop album to be certified Diamond by the Recording Industry Association of America (RIAA), denoting shipment of 10 million copies in the US.

In his early years, Nelly frequently moved locations around the United States, before residing in the city of St. Louis, Missouri.

In his teenage years, Nelly moved to University City, a suburb of St. Louis, where he shifted his aspirations from becoming a baseball player to producing stories and rhymes.

[2] Along with some friends from high school: Ali Jones, Torhi "Murphy Lee" Harper, Kyjuan and Lavell "City Spud" Webb, Nelly formed the group St. Lunatics in 1993.

[5] In conjunction, Nelly approaches a pop-rap singalong vocal style, which AllMusic's Jason Birchmeier notes present within Country Grammar's tracks including "Ride wit Me" and "E.I.".

[7] Peter Shapiro described Nelly's singing and rapping as using "unforgettable hooks based on schoolyard songs, double-dutch chants, and nonsense rhymes".

[8] Rolling Stone journalist Kris Ex found the song's lyrics to depict Nelly "riding around town in an expensive SUV with an assault weapon".

[9] "Ride wit Me" is a rap and pop crossover[11] that samples DeBarge's 1982 song "I Like It",[4] and its lyrics feature Nelly introspecting.

Steve Sutherland lauded the album in his review for NME, praising Nelly's utilization of vocal characteristics from other rap artists, including Tupac Shakur and Cypress Hill.

[11] Sutherland described the album as a "rarity", noting stand-out tracks such as the "seductive rap/pop crossover" "Ride wit Me", while likening "Batter Up" to "DMX with a humour infusion".

[11] While writing that Country Grammar demonstrates that "tiresome rap topics" are not restricted to "the coasts", Entertainment Weekly's David Browne highlighted Nelly's "smooth, slippery-fast" voice, as well as the album's "appealingly minimalist tracks" and "introspective moments" such as "Ride wit Me".

[25] People noted that Nelly implements his own "laid-back charm" to Country Grammar's southern hip hop, and that while he shows "limited thematic vocabulary", he articulates escapism to compensate for this.

[31][32] Entertainment Weekly put the album's sales down to its support by its lead single, "Country Grammar (Hot Shit)", as well as the lack of releases from other music artists during that period.

[39] The album remained on the chart for thirty-three weeks, and was certified Triple platinum by the Australian Recording Industry Association (ARIA).

[45][35][36] Vibe emphasized Nelly's expeditious fame, writing that the rapper debuted without the benefit of "guest spots or Pen and Pixel produced teasers on his CD cover".

[3] The magazine continued to note the rapper's absence of being associated with a notable group, "he just came out and sold two million records in less than a month".

[3] Nelly's success helped in making St. Louis more notable for emerging hip hop acts, increasing the city's general reputation.

Nelly ranked third on the Billboard 2000–2009 decade-end chart, due to the success of Country Grammar as well as his follow-up album Nellyville (2002).

[50] All tracks are written by Nelly (Cornell Haynes, Jr.), additional writers listed belowNotes[4] Credits adapted from liner notes.