diff --git a/classification/SingleAlphaClassification.js b/classification/SingleAlphaClassification.js
new file mode 100644
index 00000000..8f807b48
--- /dev/null
+++ b/classification/SingleAlphaClassification.js
@@ -0,0 +1,10 @@
+const Classification = require('./Classification')
+
+class SingleAlphaClassification extends Classification {
+  constructor (confidence, meta) {
+    super(confidence, meta)
+    this.label = 'single_alpha'
+  }
+}
+
+module.exports = SingleAlphaClassification
diff --git a/classification/SingleAlphaClassification.test.js b/classification/SingleAlphaClassification.test.js
new file mode 100644
index 00000000..82358f10
--- /dev/null
+++ b/classification/SingleAlphaClassification.test.js
@@ -0,0 +1,24 @@
+const Classification = require('./SingleAlphaClassification')
+
+module.exports.tests = {}
+
+module.exports.tests.constructor = (test) => {
+  test('constructor', (t) => {
+    let c = new Classification()
+    t.false(c.public)
+    t.equals(c.label, 'single_alpha')
+    t.equals(c.confidence, 1.0)
+    t.deepEqual(c.meta, {})
+    t.end()
+  })
+}
+
+module.exports.all = (tape, common) => {
+  function test (name, testFunction) {
+    return tape(`SingleAlphaClassification: ${name}`, testFunction)
+  }
+
+  for (var testCase in module.exports.tests) {
+    module.exports.tests[testCase](test, common)
+  }
+}
diff --git a/classification/SubdivisionClassification.js b/classification/SubdivisionClassification.js
new file mode 100644
index 00000000..413fe373
--- /dev/null
+++ b/classification/SubdivisionClassification.js
@@ -0,0 +1,10 @@
+const Classification = require('../classification/Classification')
+
+class SubdivisionClassification extends Classification {
+  constructor (confidence, meta) {
+    super(confidence, meta)
+    this.label = 'subdivision'
+  }
+}
+
+module.exports = SubdivisionClassification
diff --git a/classification/SubdivisionClassification.test.js b/classification/SubdivisionClassification.test.js
new file mode 100644
index 00000000..29824fdd
--- /dev/null
+++ b/classification/SubdivisionClassification.test.js
@@ -0,0 +1,24 @@
+const Classification = require('./SubdivisionClassification')
+
+module.exports.tests = {}
+
+module.exports.tests.constructor = (test) => {
+  test('constructor', (t) => {
+    let c = new Classification()
+    t.false(c.public)
+    t.equals(c.label, 'subdivision')
+    t.equals(c.confidence, 1.0)
+    t.deepEqual(c.meta, {})
+    t.end()
+  })
+}
+
+module.exports.all = (tape, common) => {
+  function test (name, testFunction) {
+    return tape(`SubdivisionClassification: ${name}`, testFunction)
+  }
+
+  for (var testCase in module.exports.tests) {
+    module.exports.tests[testCase](test, common)
+  }
+}
diff --git a/classifier/AlphaNumericClassifier.js b/classifier/AlphaNumericClassifier.js
index 195c9d2d..03ce3736 100644
--- a/classifier/AlphaNumericClassifier.js
+++ b/classifier/AlphaNumericClassifier.js
@@ -3,6 +3,7 @@ const AlphaClassification = require('../classification/AlphaClassification')
 const NumericClassification = require('../classification/NumericClassification')
 const AlphaNumericClassification = require('../classification/AlphaNumericClassification')
 const PunctuationClassification = require('../classification/PunctuationClassification')
+const SingleAlphaClassification = require('../classification/SingleAlphaClassification')
 
 class AlphaNumericClassifier extends WordClassifier {
   each (span) {
@@ -14,6 +15,9 @@ class AlphaNumericClassifier extends WordClassifier {
       span.classify(new PunctuationClassification(1))
     } else {
       span.classify(new AlphaClassification(1))
+      if (span.norm.length === 1) {
+        span.classify(new SingleAlphaClassification(1))
+      }
     }
   }
 }
diff --git a/classifier/AlphaNumericClassifier.test.js b/classifier/AlphaNumericClassifier.test.js
index c208b22b..a4513d42 100644
--- a/classifier/AlphaNumericClassifier.test.js
+++ b/classifier/AlphaNumericClassifier.test.js
@@ -3,6 +3,7 @@ const AlphaClassification = require('../classification/AlphaClassification')
 const NumericClassification = require('../classification/NumericClassification')
 const AlphaNumericClassification = require('../classification/AlphaNumericClassification')
 const PunctuationClassification = require('../classification/PunctuationClassification')
+const SingleAlphaClassification = require('../classification/SingleAlphaClassification')
 const Span = require('../tokenization/Span')
 const classifier = new AlphaNumericClassifier()
 
@@ -17,7 +18,10 @@ function classify (body) {
 module.exports.tests.alpha = (test) => {
   test('AlphaClassification: English letter', (t) => {
     let s = classify('A')
-    t.deepEqual(s.classifications, { AlphaClassification: new AlphaClassification(1.0) })
+    t.deepEqual(s.classifications, {
+      AlphaClassification: new AlphaClassification(1.0),
+      SingleAlphaClassification: new SingleAlphaClassification(1.0)
+    })
     t.end()
   })
   test('AlphaClassification: English mixed-case word', (t) => {
diff --git a/classifier/SubdivisionClassifier.js b/classifier/SubdivisionClassifier.js
new file mode 100644
index 00000000..62112ad7
--- /dev/null
+++ b/classifier/SubdivisionClassifier.js
@@ -0,0 +1,25 @@
+const PhraseClassifier = require('./super/PhraseClassifier')
+const SubdivisionClassification = require('../classification/SubdivisionClassification')
+const libpostal = require('../resources/libpostal/libpostal')
+
+class SubdivisionClassifier extends PhraseClassifier {
+  setup () {
+    this.index = {}
+    libpostal.load(this.index, ['fr'], 'subdivisions.txt', {
+      lowercase: true,
+      minlength: 3 // prevent very short names being indexed
+    })
+  }
+
+  each (span) {
+    // skip spans which contain numbers
+    if (span.contains.numerals) { return }
+
+    // use an inverted index for full token matching as it's O(1)
+    if (this.index.hasOwnProperty(span.norm)) {
+      span.classify(new SubdivisionClassification(1))
+    }
+  }
+}
+
+module.exports = SubdivisionClassifier
diff --git a/classifier/SubdivisionClassifier.test.js b/classifier/SubdivisionClassifier.test.js
new file mode 100644
index 00000000..2fa0ae28
--- /dev/null
+++ b/classifier/SubdivisionClassifier.test.js
@@ -0,0 +1,49 @@
+const SubdivisionClassifier = require('./SubdivisionClassifier')
+const SubdivisionClassification = require('../classification/SubdivisionClassification')
+const Span = require('../tokenization/Span')
+const classifier = new SubdivisionClassifier()
+
+module.exports.tests = {}
+
+function classify (body) {
+  let s = new Span(body)
+  classifier.each(s, null, 1)
+  return s
+}
+
+module.exports.tests.contains_numerals = (test) => {
+  test('contains numerals: honours contains.numerals boolean', (t) => {
+    let s = new Span('example')
+    s.contains.numerals = true
+    classifier.each(s, null, 1)
+    t.deepEqual(s.classifications, {})
+    t.end()
+  })
+}
+
+module.exports.tests.classify = (test) => {
+  let valid = [
+    'Bis',
+    'Ter'
+  ]
+
+  valid.forEach(token => {
+    test(`classify: ${token}`, (t) => {
+      let s = classify(token)
+      t.deepEqual(s.classifications, {
+        SubdivisionClassification: new SubdivisionClassification(1.0)
+      })
+      t.end()
+    })
+  })
+}
+
+module.exports.all = (tape, common) => {
+  function test (name, testFunction) {
+    return tape(`SubdivisionClassifier: ${name}`, testFunction)
+  }
+
+  for (var testCase in module.exports.tests) {
+    module.exports.tests[testCase](test, common)
+  }
+}
diff --git a/classifier/scheme/street_name.js b/classifier/scheme/street_name.js
index 9b59f771..62e13900 100644
--- a/classifier/scheme/street_name.js
+++ b/classifier/scheme/street_name.js
@@ -2,12 +2,12 @@ const StreetNameClassification = require('../../classification/StreetNameClassif
 
 module.exports = [
   {
-    // dos Fiéis
+    // dos Fiéis, a Santa
     confidence: 0.5,
     Class: StreetNameClassification,
     scheme: [
       {
-        is: ['StopWordClassification'],
+        is: ['StopWordClassification', 'SingleAlphaClassification'],
         not: ['DirectionalClassification', 'IntersectionClassification']
       },
       {
@@ -17,16 +17,16 @@ module.exports = [
     ]
   },
   {
-    // Academia das Ciências
+    // Academia das Ciências, Sol a Santa
     confidence: 0.5,
     Class: StreetNameClassification,
     scheme: [
       {
         is: ['AlphaClassification'],
-        not: ['StreetClassification', 'IntersectionClassification', 'StopWordClassification', 'StreetPrefixClassification']
+        not: ['StreetClassification', 'IntersectionClassification', 'StopWordClassification', 'SingleAlphaClassification', 'StreetPrefixClassification']
       },
       {
-        is: ['StopWordClassification'],
+        is: ['StopWordClassification', 'SingleAlphaClassification'],
         not: ['DirectionalClassification']
       },
       {
diff --git a/classifier/scheme/subdivision.js b/classifier/scheme/subdivision.js
index c691a953..857dccb4 100644
--- a/classifier/scheme/subdivision.js
+++ b/classifier/scheme/subdivision.js
@@ -11,7 +11,7 @@ module.exports = [
         not: ['IntersectionClassification']
       },
       {
-        is: ['StopWordClassification'],
+        is: ['SubdivisionClassification'],
         not: ['IntersectionClassification', 'PunctuationClassification']
       }
     ]
diff --git a/parser/AddressParser.js b/parser/AddressParser.js
index f88eff48..f3eccf1e 100644
--- a/parser/AddressParser.js
+++ b/parser/AddressParser.js
@@ -26,6 +26,7 @@ const CentralEuropeanStreetNameClassifier = require('../classifier/CentralEurope
 const CompositeClassifier = require('../classifier/CompositeClassifier')
 const WhosOnFirstClassifier = require('../classifier/WhosOnFirstClassifier')
 // const AdjacencyClassifier = require('../classifier/AdjacencyClassifier')
+const SubdivisionClassifier = require('../classifier/SubdivisionClassifier')
 const ExclusiveCartesianSolver = require('../solver/ExclusiveCartesianSolver')
 const LeadingAreaDeclassifier = require('../solver/LeadingAreaDeclassifier')
 const MultiStreetSolver = require('../solver/MultiStreetSolver')
@@ -71,6 +72,7 @@ class AddressParser extends Parser {
         new ChainClassifier(),
         new PlaceClassifier(),
         new WhosOnFirstClassifier(),
+        new SubdivisionClassifier(),
 
         // composite classifiers
         new CompositeClassifier(require('../classifier/scheme/person')),
diff --git a/resources/pelias/dictionaries/libpostal/en/stopwords.txt b/resources/pelias/dictionaries/libpostal/en/stopwords.txt
new file mode 100644
index 00000000..567568f0
--- /dev/null
+++ b/resources/pelias/dictionaries/libpostal/en/stopwords.txt
@@ -0,0 +1,2 @@
+!in
+!a
\ No newline at end of file
diff --git a/resources/pelias/dictionaries/libpostal/fr/stopwords.txt b/resources/pelias/dictionaries/libpostal/fr/subdivisions.txt
similarity index 100%
rename from resources/pelias/dictionaries/libpostal/fr/stopwords.txt
rename to resources/pelias/dictionaries/libpostal/fr/subdivisions.txt
diff --git a/test/address.esp.test.js b/test/address.esp.test.js
index 643386e0..62cd9ebd 100644
--- a/test/address.esp.test.js
+++ b/test/address.esp.test.js
@@ -6,6 +6,12 @@ const testcase = (test, common) => {
     { postcode: '08011' }, { locality: 'Barcelona' }
   ])
 
+  // note: the desired behavior here is to not include the 'B' in the housenumber
+  // as it is more likely to be part of the administrative unit.
+  assert('Calle Principal 20 B', [
+    { street: 'Calle Principal' }, { housenumber: '20' }
+  ])
+
   assert('Calle Principal 20 Barcelona', [
     { street: 'Calle Principal' }, { housenumber: '20' },
     { locality: 'Barcelona' }
diff --git a/test/address.fra.test.js b/test/address.fra.test.js
index 197965dd..8feb457f 100644
--- a/test/address.fra.test.js
+++ b/test/address.fra.test.js
@@ -133,6 +133,12 @@ const testcase = (test, common) => {
     { locality: 'Châtillon' },
     { country: 'France' }
   ])
+  assert(`1 bis Rue Ballainvilliers 63000 Clermont-Ferrand`, [
+    { housenumber: '1 bis' },
+    { street: 'Rue Ballainvilliers' },
+    { postcode: '63000' },
+    { locality: 'Clermont-Ferrand' }
+  ])
 }
 
 module.exports.all = (tape, common) => {
diff --git a/test/address.usa.test.js b/test/address.usa.test.js
index d31aa74a..6eeaf681 100644
--- a/test/address.usa.test.js
+++ b/test/address.usa.test.js
@@ -293,8 +293,21 @@ const testcase = (test, common) => {
 
   // https://github.com/pelias/parser/pull/179
   assert('10 A Main Street', [
-    { housenumber: '10 A' },
-    { street: 'Main Street' }
+    { housenumber: '10' },
+    { street: 'A Main Street' }
+  ])
+
+  // https://github.com/pelias/parser/issues/191
+  assert('Indianapolis, IN', [
+    { locality: 'Indianapolis' },
+    { region: 'IN' }
+  ])
+  assert('1441 Brown Ave, Whiting, IN 46394', [
+    { housenumber: '1441' },
+    { street: 'Brown Ave' },
+    { locality: 'Whiting' },
+    { region: 'IN' },
+    { postcode: '46394' }
   ])
 }