This study examined how indirect fire effects (improved forage quality) affect the density of and offtake by grasshoppers at two different times since fire and in unburned plots. Data include total aboveground forage removal inside and outside grasshopper exclosures, crude protein content of aboveground plant material, and grasshopper densities throughout the study period. Both forage offtake and grasshopper density were significantly higher in burned plots compared to unburned plots. Burned plot grasshopper density increased over time, with greater rates of increase in recently burned plots, while density remained constant in unburned locations. These density and offtake patterns appear to be the result of higher crude protein content in burned plots, on account of them having a much higher proportion of recent growth after fire removed aboveground senesced material. Resources in this dataset:Resource Title: Rangeland fire grasshopper forage data. File Name: RangelandFireGrasshopperForage.xlsxResource Description: Excel file containing plot-level data used in formal analysis.Resource Title: Script. File Name: ScriptSupplement.pdfResource Description: R script used for data wrangling and statistical analysisResource Software Recommended: R 4.0.3,url: https://cran.r-project.org