Highest salary at Town of Grantham in year 2024 was $119,994. Number of employees at Town of Grantham in year 2024 was 21. Average annual salary was $69,728 and median salary was $66,745. Town of Grantham average salary is 49 percent higher than USA average and median salary is 53 percent higher than USA median salary. From 2023 to 2024, the average salary of employees at this employer increased 24.2 percent, the median salary increased 24.1 percent.