diff --git a/resources/parser/data_sets/openaddresses.yaml b/resources/parser/data_sets/openaddresses.yaml
index d8f1a9c9..a0ca6fb8 100644
--- a/resources/parser/data_sets/openaddresses.yaml
+++ b/resources/parser/data_sets/openaddresses.yaml
@@ -54,7 +54,7 @@ global:
             component: unit
 
     ignore_simple_units: &ignore_simple_units
-        - &simple_unit_regex "^(?:[A-Z]?[0-9]*|[0-9]*[A-Z]?)$"
+        - &simple_unit_regex "^(?:[A-Z]?\-?[0-9]*(?:[\\s]*/[\\s]*[0-9]*)?|[0-9]*(?:[\\s]*/[\\s]*[0-9]*)?-?[A-Z]?|[A-Z]*[0-9]+[A-Z]?/[0-9]*[A-Z][0-9]*|[0-9]*[A-Z][0-9*]/[0-9]+[A-Z]?)$"
 
     # Turned off by default to avoid performance penalty for reverse geocoding
     add_osm_boundaries: false
@@ -3389,6 +3389,13 @@ countries:
                       ignore_fields_containing:
                           unit: *ignore_simple_units
                     - filename: city_of_columbia.csv
+                      fields: *fields_with_unit
+                      non_numeric_units: true
+                      ignore_fields_containing:
+                          unit:
+                              - *simple_unit_regex
+                              # Too ambiguous
+                              - "^park$"
                     - filename: city_of_kansas_city.csv
                     - filename: city_of_perryville.csv
                       add_osm_boundaries: true