diff --git a/change/react-native-windows-2020-04-15-07-30-29-fix-picker.json b/change/react-native-windows-2020-04-15-07-30-29-fix-picker.json
new file mode 100644
index 00000000000..39dd48b64f6
--- /dev/null
+++ b/change/react-native-windows-2020-04-15-07-30-29-fix-picker.json
@@ -0,0 +1,8 @@
+{
+  "type": "prerelease",
+  "comment": "Fix PickerWindows (and DatePickerExample Page)",
+  "packageName": "react-native-windows",
+  "email": "ngerlem@microsoft.com",
+  "dependentChangeType": "patch",
+  "date": "2020-04-15T14:30:29.574Z"
+}
\ No newline at end of file
diff --git a/vnext/src/Libraries/Components/Picker/Picker.windows.js b/vnext/src/Libraries/Components/Picker/Picker.windows.js
new file mode 100644
index 00000000000..a91c988168d
--- /dev/null
+++ b/vnext/src/Libraries/Components/Picker/Picker.windows.js
@@ -0,0 +1,160 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow
+ */
+
+'use strict';
+
+const PickerAndroid = require('./PickerAndroid');
+const PickerIOS = require('./PickerIOS');
+const PickerWindows = require('./PickerWindows').Picker; // [Windows]
+const Platform = require('../../Utilities/Platform');
+const React = require('react');
+const UnimplementedView = require('../UnimplementedViews/UnimplementedView');
+
+import type {TextStyleProp} from '../../StyleSheet/StyleSheet';
+import type {ColorValue} from '../../StyleSheet/StyleSheetTypes';
+
+const MODE_DIALOG = 'dialog';
+const MODE_DROPDOWN = 'dropdown';
+
+type PickerItemProps = $ReadOnly<{|
+  /**
+   * Text to display for this item.
+   */
+  label: string,
+
+  /**
+   * The value to be passed to picker's `onValueChange` callback when
+   * this item is selected. Can be a string or an integer.
+   */
+  value?: ?(number | string),
+
+  /**
+   * Color of this item's text.
+   * @platform android
+   */
+  color?: ColorValue,
+
+  /**
+   * Used to locate the item in end-to-end tests.
+   */
+  testID?: string,
+|}>;
+
+/**
+ * Individual selectable item in a Picker.
+ */
+export type {PickerItem};
+class PickerItem extends React.Component<PickerItemProps> {
+  render() {
+    // The items are not rendered directly
+    throw null;
+  }
+}
+
+type PickerProps = $ReadOnly<{|
+  children?: React.Node,
+  style?: ?TextStyleProp,
+
+  /**
+   * Value matching value of one of the items. Can be a string or an integer.
+   */
+  selectedValue?: ?(number | string),
+
+  /**
+   * Callback for when an item is selected. This is called with the following parameters:
+   *   - `itemValue`: the `value` prop of the item that was selected
+   *   - `itemIndex`: the index of the selected item in this picker
+   */
+  onValueChange?: ?(itemValue: string | number, itemIndex: number) => mixed,
+
+  /**
+   * If set to false, the picker will be disabled, i.e. the user will not be able to make a
+   * selection.
+   * @platform android
+   */
+  enabled?: ?boolean,
+
+  /**
+   * On Android, specifies how to display the selection items when the user taps on the picker:
+   *
+   *   - 'dialog': Show a modal dialog. This is the default.
+   *   - 'dropdown': Shows a dropdown anchored to the picker view
+   *
+   * @platform android
+   */
+  mode?: ?('dialog' | 'dropdown'),
+
+  /**
+   * Style to apply to each of the item labels.
+   * @platform ios
+   */
+  itemStyle?: ?TextStyleProp,
+
+  /**
+   * Prompt string for this picker, used on Android in dialog mode as the title of the dialog.
+   * @platform android
+   */
+  prompt?: ?string,
+
+  /**
+   * Used to locate this view in end-to-end tests.
+   */
+  testID?: ?string,
+|}>;
+
+/**
+ * Renders the native picker component on iOS and Android. Example:
+ *
+ *     <Picker
+ *       selectedValue={this.state.language}
+ *       onValueChange={(itemValue, itemIndex) => this.setState({language: itemValue})}>
+ *       <Picker.Item label="Java" value="java" />
+ *       <Picker.Item label="JavaScript" value="js" />
+ *     </Picker>
+ */
+class Picker extends React.Component<PickerProps> {
+  /**
+   * On Android, display the options in a dialog.
+   */
+  static MODE_DIALOG: $TEMPORARY$string<'dialog'> = MODE_DIALOG;
+
+  /**
+   * On Android, display the options in a dropdown (this is the default).
+   */
+  static MODE_DROPDOWN: $TEMPORARY$string<'dropdown'> = MODE_DROPDOWN;
+
+  static Item: typeof PickerItem = PickerItem;
+
+  static defaultProps: {|mode: $TEMPORARY$string<'dialog'>|} = {
+    mode: MODE_DIALOG,
+  };
+
+  render(): React.Node {
+    if (Platform.OS === 'ios') {
+      /* $FlowFixMe(>=0.81.0 site=react_native_ios_fb) This suppression was
+       * added when renaming suppression sites. */
+      return <PickerIOS {...this.props}>{this.props.children}</PickerIOS>;
+    } else if (Platform.OS === 'android') {
+      return (
+        /* $FlowFixMe(>=0.81.0 site=react_native_android_fb) This suppression
+         * was added when renaming suppression sites. */
+        <PickerAndroid {...this.props}>{this.props.children}</PickerAndroid>
+      );
+    } else if (Platform.OS === 'windows') {
+      return (
+        <PickerWindows {...this.props}>{this.props.children}</PickerWindows> // [Windows]
+      );
+    } else {
+      return <UnimplementedView />;
+    }
+  }
+}
+
+module.exports = Picker;
diff --git a/vnext/src/Libraries/Components/Picker/Picker.windows.tsx b/vnext/src/Libraries/Components/Picker/Picker.windows.tsx
deleted file mode 100644
index 25cc37047ba..00000000000
--- a/vnext/src/Libraries/Components/Picker/Picker.windows.tsx
+++ /dev/null
@@ -1,127 +0,0 @@
-/**
- * Copyright (c) Microsoft Corporation. All rights reserved.
- * Licensed under the MIT License.
- * @format
- */
-'use strict';
-
-import * as React from 'react';
-import {requireNativeComponent, processColor} from 'react-native';
-import {
-  IPickerItemProps,
-  IPickerProps,
-  IPickerChangeEvent,
-} from './PickerProps';
-
-const RCTPicker = requireNativeComponent<
-  IPickerProps & {items: IPickerItemData[]; selectedIndex: number}
->('RCTPicker');
-
-class PickerItem extends React.Component<IPickerItemProps> {
-  public render(): JSX.Element | null {
-    return null;
-  }
-}
-
-interface IPickerItemData {
-  label: string;
-  // tslint:disable-next-line:no-any
-  value?: any;
-  textColor?: number;
-}
-
-// tslint:disable-next-line:interface-name
-interface State {
-  selectedIndex: number;
-  items: IPickerItemData[];
-}
-
-type PickerPropsWithChildren = Readonly<{children?: React.ReactNode}> &
-  Readonly<IPickerProps>;
-
-/**
- * Picker is a controlled component, which expects the selectedValue prop to be updated
- * whenever selection changes, or selection will revert to the prop selectedValue
- *
- * when using editable=true, onValueChange can be called with a selectedValue of null &
- * Index of -1, and text will be provided.
- * To maintain the text in the controlled component, props should reflect
- * that state by specifying selectedValue of null and specify the text property.
- */
-class Picker extends React.Component<IPickerProps, State> {
-  public static Item = PickerItem;
-
-  // tslint:disable-next-line:no-any
-  private _rctPicker: any;
-
-  public static getDerivedStateFromProps(
-    props: PickerPropsWithChildren,
-  ): State {
-    let selectedIndex = -1;
-    const items: IPickerItemData[] = [];
-    React.Children.toArray(props.children).forEach(
-      (c: React.ReactNode, index: number) => {
-        const child = (c as unknown) as PickerItem;
-        if (child.props.value === props.selectedValue) {
-          selectedIndex = index;
-        }
-        items.push({
-          value: child.props.value,
-          label: child.props.label,
-          textColor: processColor(child.props.color),
-        });
-      },
-    );
-    return {selectedIndex, items};
-  }
-
-  public constructor(props: IPickerProps) {
-    super(props);
-    this._rctPicker = React.createRef();
-    this.state = {
-      selectedIndex: 0,
-      items: [],
-    };
-  }
-
-  public render(): JSX.Element {
-    const props = {...this.props};
-    props.onStartShouldSetResponder = () => true;
-    props.onResponderTerminationRequest = () => false;
-    props.style = this.props.style;
-
-    return (
-      <RCTPicker
-        {...props}
-        items={this.state.items}
-        selectedIndex={this.state.selectedIndex}
-        onChange={this._onChange}
-        ref={this._setRef}>
-        {this.props.children}
-      </RCTPicker>
-    );
-  }
-
-  private _setRef = (comboBox: any /*RCTPicker*/) => {
-    this._rctPicker = comboBox;
-  };
-
-  private _onChange = (event: IPickerChangeEvent) => {
-    if (this._rctPicker) {
-      this._rctPicker.setNativeProps({
-        selectedIndex: this.state.selectedIndex,
-        text: this.props.text,
-      });
-    }
-
-    this.props.onChange && this.props.onChange(event);
-    this.props.onValueChange &&
-      this.props.onValueChange(
-        event.nativeEvent.value,
-        event.nativeEvent.itemIndex,
-        event.nativeEvent.text,
-      );
-  };
-}
-
-module.exports = Picker;
diff --git a/vnext/src/Libraries/Components/Picker/PickerWindows.tsx b/vnext/src/Libraries/Components/Picker/PickerWindows.tsx
index 76431ba2009..22b512df199 100644
--- a/vnext/src/Libraries/Components/Picker/PickerWindows.tsx
+++ b/vnext/src/Libraries/Components/Picker/PickerWindows.tsx
@@ -19,7 +19,7 @@ const RCTPicker = requireNativeComponent<
 
 class PickerItem extends React.Component<IPickerItemProps> {
   public render(): JSX.Element | null {
-    return null;
+    throw null;
   }
 }
 
@@ -85,20 +85,19 @@ export class Picker extends React.Component<IPickerProps, State> {
   }
 
   public render(): JSX.Element {
-    const props = {...this.props};
-    props.onStartShouldSetResponder = () => true;
-    props.onResponderTerminationRequest = () => false;
-    props.style = this.props.style;
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    const {children, ...propsWihoutChildren} = {...this.props};
+    propsWihoutChildren.onStartShouldSetResponder = () => true;
+    propsWihoutChildren.onResponderTerminationRequest = () => false;
 
     return (
       <RCTPicker
-        {...props}
+        {...propsWihoutChildren}
         items={this.state.items}
         selectedIndex={this.state.selectedIndex}
         onChange={this._onChange}
-        ref={this._setRef}>
-        {this.props.children}
-      </RCTPicker>
+        ref={this._setRef}
+      />
     );
   }
 
diff --git a/vnext/src/overrides.json b/vnext/src/overrides.json
index 5a9e051c70d..c08977e63fd 100644
--- a/vnext/src/overrides.json
+++ b/vnext/src/overrides.json
@@ -204,12 +204,12 @@
       "baseHash": "0b409391c852a1001cee74a84414a13c4fe88f8b"
     },
     {
-      "type": "derived",
-      "file": "Libraries\\Components\\Picker\\Picker.windows.tsx",
+      "type": "patch",
+      "file": "Libraries\\Components\\Picker\\Picker.windows.js",
       "baseFile": "Libraries\\Components\\Picker\\Picker.js",
       "baseVersion": "0.62.0-rc.3",
       "baseHash": "67a10fef33208d21006d7bd51b4e6fd8d4c9ca5d",
-      "issue": "LEGACY_FIXME"
+      "issue": 4611
     },
     {
       "type": "derived",
@@ -244,8 +244,12 @@
       "file": "Libraries\\Components\\Picker\\PickerProps.ts"
     },
     {
-      "type": "platform",
-      "file": "Libraries\\Components\\Picker\\PickerWindows.tsx"
+      "type": "derived",
+      "file": "Libraries\\Components\\Picker\\PickerWindows.tsx",
+      "baseFile": "Libraries\\Components\\Picker\\PickerIOS.ios.js",
+      "baseVersion": "0.62.2",
+      "baseHash": "f1409e9f69332850927323ecf2cf66a3573ef25e",
+      "issue": 4611
     },
     {
       "type": "patch",