diff --git a/packages/calitp-data-analysis/calitp_data_analysis/geography_utils.py b/packages/calitp-data-analysis/calitp_data_analysis/geography_utils.py
index 5ed28cc61e..e551354457 100644
--- a/packages/calitp-data-analysis/calitp_data_analysis/geography_utils.py
+++ b/packages/calitp-data-analysis/calitp_data_analysis/geography_utils.py
@@ -2,7 +2,7 @@
 Utility functions for geospatial data.
 Some functions for dealing with census tract or other geographic unit dfs.
 """
-from typing import Literal, Optional, Sequence, Union, cast
+from typing import Literal, Sequence, Union, cast
 
 import dask.dataframe as dd
 import geopandas as gpd  # type: ignore
@@ -21,10 +21,10 @@
 def aggregate_by_geography(
     df: Union[pd.DataFrame, gpd.GeoDataFrame],
     group_cols: list,
-    sum_cols: Sequence[str],
-    mean_cols: Sequence[str],
-    count_cols: Sequence[str],
-    nunique_cols: Sequence[str],
+    sum_cols: Sequence,
+    mean_cols: Sequence,
+    count_cols: Sequence,
+    nunique_cols: Sequence,
     rename_cols: bool = False,
 ) -> pd.DataFrame:
     """
@@ -55,7 +55,7 @@ def aggregate_and_merge(
         df: Union[pd.DataFrame, gpd.GeoDataFrame],
         final_df: pd.DataFrame,
         group_cols: list,
-        agg_cols: Optional[str],
+        agg_cols: Sequence,
         aggregate_function: str,
     ):
         agg_df = df.pivot_table(