diff --git a/data/data-pipeline/data_pipeline/etl/sources/cdc_life_expectancy/etl.py b/data/data-pipeline/data_pipeline/etl/sources/cdc_life_expectancy/etl.py
index 2aac7412..981e40d9 100644
--- a/data/data-pipeline/data_pipeline/etl/sources/cdc_life_expectancy/etl.py
+++ b/data/data-pipeline/data_pipeline/etl/sources/cdc_life_expectancy/etl.py
@@ -2,6 +2,11 @@ from pathlib import Path
 import pandas as pd
 
 from data_pipeline.etl.base import ExtractTransformLoad
+from data_pipeline.etl.score.constants import (
+    TILES_ISLAND_AREA_FIPS_CODES,
+    TILES_PUERTO_RICO_FIPS_CODE,
+)
+from data_pipeline.etl.sources.census.etl_utils import get_state_fips_codes
 from data_pipeline.utils import get_module_logger, download_file_from_url
 
 logger = get_module_logger(__name__)
@@ -9,12 +14,19 @@ logger = get_module_logger(__name__)
 
 class CDCLifeExpectancy(ExtractTransformLoad):
     def __init__(self):
-        self.FILE_URL: str = "https://ftp.cdc.gov/pub/Health_Statistics/NCHS/Datasets/NVSS/USALEEP/CSV/US_A.CSV"
+        self.USA_FILE_URL: str = "https://ftp.cdc.gov/pub/Health_Statistics/NCHS/Datasets/NVSS/USALEEP/CSV/US_A.CSV"
+
+        # For some reason, LEEP does not include Maine or Wisconsin in its "All of
+        # USA" file. Load these separately.
+        self.WISCONSIN_FILE_URL: str = "https://ftp.cdc.gov/pub/Health_Statistics/NCHS/Datasets/NVSS/USALEEP/CSV/WI_A.CSV"
+        self.MAINE_FILE_URL: str = "https://ftp.cdc.gov/pub/Health_Statistics/NCHS/Datasets/NVSS/USALEEP/CSV/ME_A.CSV"
+
         self.OUTPUT_PATH: Path = (
             self.DATA_PATH / "dataset" / "cdc_life_expectancy"
         )
 
         self.TRACT_INPUT_COLUMN_NAME = "Tract ID"
+        self.STATE_INPUT_COLUMN_NAME = "STATE2KX"
         self.LIFE_EXPECTANCY_FIELD_NAME = "Life expectancy (years)"
 
         # Constants for output
@@ -29,26 +41,108 @@ class CDCLifeExpectancy(ExtractTransformLoad):
     def extract(self) -> None:
         logger.info("Starting data download.")
 
-        download_file_name = (
+        all_usa_download_file_name = (
             self.get_tmp_path() / "cdc_life_expectancy" / "usa.csv"
         )
         download_file_from_url(
-            file_url=self.FILE_URL,
-            download_file_name=download_file_name,
+            file_url=self.USA_FILE_URL,
+            download_file_name=all_usa_download_file_name,
             verify=True,
         )
 
-        self.raw_df = pd.read_csv(
-            filepath_or_buffer=download_file_name,
-            dtype={
-                # The following need to remain as strings for all of their digits, not get converted to numbers.
-                self.TRACT_INPUT_COLUMN_NAME: "string",
-            },
+        pandas_read_csv_dtype_settings = {
+            # The following need to remain as strings for all of their digits, not get converted to numbers.
+            self.TRACT_INPUT_COLUMN_NAME: "string",
+            self.STATE_INPUT_COLUMN_NAME: "string",
+        }
+
+        all_usa_raw_df = pd.read_csv(
+            filepath_or_buffer=all_usa_download_file_name,
+            dtype=pandas_read_csv_dtype_settings,
             low_memory=False,
         )
 
+        # Check which states are missing
+        state_fips_codes = get_state_fips_codes(self.DATA_PATH)
+        states_in_life_expectancy_usa_file = all_usa_raw_df[
+            self.STATE_INPUT_COLUMN_NAME
+        ].unique()
+
+        expected_states_set = (
+            set(state_fips_codes)
+            # We don't expect LEEP to have data for island areas or Puerto Rico.
+            - set(TILES_ISLAND_AREA_FIPS_CODES)
+            - set(TILES_PUERTO_RICO_FIPS_CODE)
+        )
+
+        # Find which states are missing from the expected set.
+        states_missing = sorted(
+            list(expected_states_set - set(states_in_life_expectancy_usa_file))
+        )
+
+        if states_missing != ["23", "55"]:
+            raise ValueError(
+                "LEEP data has changed. The states missing from the data are "
+                "no longer the same."
+            )
+
+        logger.info("Downloading data for Maine")
+        maine_download_file_name = (
+            self.get_tmp_path() / "cdc_life_expectancy" / "maine.csv"
+        )
+        download_file_from_url(
+            file_url=self.MAINE_FILE_URL,
+            download_file_name=maine_download_file_name,
+            verify=True,
+        )
+        maine_raw_df = pd.read_csv(
+            filepath_or_buffer=maine_download_file_name,
+            dtype=pandas_read_csv_dtype_settings,
+            low_memory=False,
+        )
+
+        logger.info("Downloading data for Wisconsin")
+        wisconsin_download_file_name = (
+            self.get_tmp_path() / "cdc_life_expectancy" / "wisconsin.csv"
+        )
+        download_file_from_url(
+            file_url=self.WISCONSIN_FILE_URL,
+            download_file_name=wisconsin_download_file_name,
+            verify=True,
+        )
+        wisconsin_raw_df = pd.read_csv(
+            filepath_or_buffer=wisconsin_download_file_name,
+            dtype=pandas_read_csv_dtype_settings,
+            low_memory=False,
+        )
+
+        combined_df = pd.concat(
+            objs=[all_usa_raw_df, maine_raw_df, wisconsin_raw_df],
+            ignore_index=True,
+            verify_integrity=True,
+            axis=0,
+        )
+
+        states_in_combined_df = combined_df[
+            self.STATE_INPUT_COLUMN_NAME
+        ].unique()
+
+        # Find which states are missing from the combined df.
+        states_missing = sorted(
+            list(expected_states_set - set(states_in_combined_df))
+        )
+
+        if len(states_missing) != 0:
+            raise ValueError(
+                "The states missing from combined dataframe are "
+                "no longer as expected."
+            )
+
+        # Save the updated version
+        self.raw_df = combined_df
+
     def transform(self) -> None:
-        logger.info("Starting DOE energy burden transform.")
+        logger.info("Starting CDC life expectancy transform.")
 
         self.output_df = self.raw_df.rename(
             columns={