US in-store convenience sales rose 2.4% in 2013 to reach a "record high" of US$204bn, figures released by the National Association of Convenience Stores suggest.

At a two-day "state of the industry" summit, NACS officials attributed sales growth to growing demand for "on-the-go" products and evolving consumer needs.

"Our industry numbers demonstrate that convenience and fuel retailing continues to grow, despite economic and retail environment challenges," said NACS Chairman Brad Call, vice president of adventure culture at Maverik Inc. "These numbers show that we continue to meet the needs of our diverse consumers throughout the United States."

In-store sales growth in 2013 was led by continued growth in foodservice sales, which rose by 2.4% and now account for 18% of total convenience sales and 29.1% of gross profit.

Centre-store snacking products accounted for 9.9% of total convenience sales last year, the NACS data revealed.